Insert ∈ or ∉ in each blank to make the resulting statement true. 0 _____ {0, 2, 3, 4}

Insert ∈ or ∉ in each blank to make the resulting statement true. 0 _____ {0, 5, 6, 7, 8, 10}

Multiply or divide as indicated. Write answers in lowest terms as needed. (21/8)∙(4/7)

Write each number in decimal notation: 7.45*10^(-5)

Find the union of the sets. {e,m,p,t,y} ∪ ∅

Write each number in scientific notation. 3,590,000