If g(x)=5/4x-7 what is the value of g(12)

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?