Simplify [(a⁴b⁵)² ÷ (a⁹b⁷)⁰] ÷ ab²

Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

Ineed to know the answer to this algebra question.