Q: Which of the following is NOT a valid application of ratios and proportions?

Calculating the slope of a line

Q: Which of the following statements about statistical analysis is TRUE?

The mode is the value that appears most frequently in a data set.

Question 1

Which of the following best describes the solution set of the system of equations: $\begin{cases} 2x + 3y = 6 \ 4x + 6y = 12 \end{cases}$?

Accepted Answer

Infinitely many solutions

Question 2

A chemist mixes two solutions: Solution A contains 40% acid and Solution B contains 10% acid. How many liters of each should be mixed to obtain 10 liters of a solution that is 25% acid?

Accepted Answer

$4$ liters of Solution A and $6$ liters of Solution B

Question 3

Which of the following is the correct conversion from $5$ kilometers to miles, given that $1$ mile $\approx 1.609$ kilometers?

Accepted Answer

$3.11$ miles

Question 4

If the graph of a linear equation passes through the points $(2, 5)$ and $(6, 13)$, what is the equation of the line in slope-intercept form?

Accepted Answer

$y = 2x + 1$

Question 5

A hospital orders $120$ doses of a medication. Each dose is $0.75$ milliliters. What is the total volume of medication ordered in liters?

Accepted Answer

$0.9$ liters

Question 6

Which of the following is the correct symbolic representation for the statement: 'The sum of twice a number and five is less than ten'?

Accepted Answer

$2x + 5 < 10$

Question 7

A car rental company charges a flat fee of $\$25$ plus $\$0.20$ per mile driven. If a customer paid $\$45$, how many miles did they drive?

Accepted Answer

$100$ miles

Question 8

Which of the following is NOT a valid application of ratios and proportions?

Accepted Answer

Calculating the slope of a line

Question 9

A student scored $85$ out of $100$ on Exam 1, $90$ out of $100$ on Exam 2, and $80$ out of $100$ on Exam 3. If each exam is worth $20\%$ of the final grade, what is the weighted average score for these three exams?

Accepted Answer

$86$

Question 10

Which of the following statements about statistical analysis is TRUE?

Accepted Answer

The mode is the value that appears most frequently in a data set.

Question 11

A patient’s temperature increased from $98.6^\circ$F to $101.3^\circ$F. What is the increase in temperature in degrees Celsius? (Use $C = \frac{5}{9}(F - 32)$)

Accepted Answer

$2.7^\circ$C

Question 12

Which of the following is the correct solution to the equation $3(x - 2) = 2x + 5$?

Accepted Answer

$x = 11$

Question 13

A recipe calls for $2$ cups of flour for every $3$ cups of sugar. If you want to make a batch with $12$ cups of sugar, how many cups of flour are needed?

Accepted Answer

$8$ cups

Question 14

Which of the following is the correct graph for the inequality $y > 2x - 3$?

Accepted Answer

A dashed line for $y = 2x - 3$ with shading above the line

Question 15

A biologist records the number of bacteria in a culture every hour. The data shows the population doubles every hour. Which type of mathematical model best describes this growth?

Accepted Answer

Exponential model

Question 16

Which of the following is the correct unit conversion for $250$ milliliters to liters?

Accepted Answer

$0.25$ liters

Question 17

A student is analyzing the argument: 'If it rains, then the ground will be wet. It is raining. Therefore, the ground is wet.' Which type of logical reasoning is being used?

Accepted Answer

Modus ponens

Question 18

Which of the following is the correct solution to the system of equations: $\begin{cases} x + y = 7 \ x - y = 3 \end{cases}$?

Accepted Answer

$x = 5, y = 2$

Question 19

A nurse needs to prepare a $500$ mg dose of medication. The available solution contains $250$ mg per $5$ mL. How many milliliters should the nurse administer?

Accepted Answer

$10$ mL

MAT 110-4822: Applied Mathematics (College Algebra) – Syllabus and Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards