Multiply or divide as indicated. Write answers in lowest terms as needed. (5/9)∙(2/7)

Multiply or divide as indicated. Write answers in lowest terms as needed. (4/5)∙(6/7)

Evaluate each exponential expression: 2^(-4) + 4^(-1)

Use set notation, and list all the elements of each set. {x | x is a natural number not greater than 4}

Evaluate each exponential expression: 5^-3• 5

Evaluate each exponential expression: (3³)/(3⁶)

Insert ∈ or ∉ in each blank to make the resulting statement true. 6 _____ {3, 4, 5, 6}

Find the intersection of the sets. {a,b,c,d}∩∅