Q: A medical researcher needs to simplify the radical expression $$\sqrt{50}$$ for a dosage calculation. What is the simplified form?

$$\sqrt{25} \times \sqrt{2} = 5\sqrt{2}$$

Question 1

A pharmaceutical company needs to solve for the concentration $$x in $$the equation $$5x + 3 = 23 to $$determine the amount of active ingredient in a medication. What is the value of $$x$$?

Accepted Answer

$$x = 5$$

Question 2

A hospital must ensure that the temperature in a storage room stays between $$2^	ext{o}C $$and $$8^	ext{o}C. $$Which interval notation correctly represents this range?

Accepted Answer

$$[2, 8]$$

Question 3

Given the function $$f(x) = 2x^2$ - 3x + 1$$, what is $$f(4)$$?

Accepted Answer

$$f(4) = 17$$

Question 4

A biologist graphs the function $$g(x) = -x^2$ + 4x to $$model population growth. What is the vertex of the graph?

Accepted Answer

$$(2, 4)$$

Question 5

A city planner uses the equation $$y = 3x + 7 to $$model the cost of paving roads, where $$x is $$the number of miles. What is the slope of the line, and what does it represent?

Accepted Answer

Slope is $$3$$, representing the cost per mile.

Question 6

A chemist needs to solve the system of equations for two reactants: $$\begin{cases} 2x + y = 10 \ x - y = 2 \end{cases}. $$What is the value of $$x$$?

Accepted Answer

$$x = 4$$

Question 7

A business owner wants to factor the expression $$x^2 - 9x + 20$ to determine break-even points. Which is the correct factorization?

Accepted Answer

$$(x - 4)(x - 5)$$

Question 8

A nutritionist simplifies the rational expression $$\frac{6x^2$}{3x} to $$calculate nutrient ratios. What is the simplified form?

Accepted Answer

$$2x$$

Question 9

A civil engineer solves the rational equation $$\frac{2}{x} = 4 to $$determine pipe diameter. What is the value of $$x$$?

Accepted Answer

$$x = 0.5$$

Question 10

A medical researcher needs to simplify the radical expression $$\sqrt{50}$$ for a dosage calculation. What is the simplified form?

Accepted Answer

$$\sqrt{25} 	imes \sqrt{2} = 5\sqrt{2}$$

Question 11

A physicist evaluates $$16^{\frac{1}$${4}}$$ to determine the length of a side in a square. What is the value?

Accepted Answer

$$2$$

Question 12

A computer scientist solves the quadratic equation $$x^2 - 6x + 8 = 0$ using the quadratic formula. What are the solutions?

Accepted Answer

$$x = 2$$ and $$x = 4$$

Question 13

A biologist graphs the quadratic function $$f(x) = x^2$ - 4x + 3. $$What is the axis of symmetry?

Accepted Answer

$$x = 2$$

Question 14

A financial analyst models compound interest with the exponential function $$A = 1000 \cdot 1.05^t. $$What is the value of $$A$$ after $$3$$ years?

Accepted Answer

$$A = 1157.63$$

Question 15

A scientist uses the logarithmic function $$pH = -\log_{10}[H^+] to $$calculate the pH of a solution with $$[H^+] = 1 	imes 10$$^{-4}$$. What is the pH?

Accepted Answer

$$pH = 4$$

Question 16

A population grows according to $$P(t) = 500 \cdot 2^t. $$What is the population after $$t = 3$$ years?

Accepted Answer

$$P(3) = 4000$$

Question 17

A student solves the equation $$\sqrt{x} = 5$$ using the square root property. What is the value of $$x$$?

Accepted Answer

$$x = 25$$

Question 18

A chemist needs to solve the inequality $$3x - 7 \u003c 8 to $$determine safe concentration levels. What is the solution in interval notation?

Accepted Answer

$$(-\infty, 5)$$

Question 19

A business owner wants to solve the system $$\begin{cases} x + y = 10 \ x - y = 2 \end{cases} to $$determine the number of products sold and returned. What is the value of $$y$$?

Accepted Answer

$$y = 4$$

Question 20

A biologist uses the function $$f(x) = 3x^2$ - 2x + 5 to $$model cell growth. What is $$f(-2)$$?

Accepted Answer

$$f(-2) = 21$$

College Algebra Course Schedule and Topic Overview

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드