What should you look for when purchasing a pair of fitness shoes?

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end of the board is approximated by the equation h=-x^2+3x+3. what is the maximum height jasmine will reach on her dive?

What is an aquifer for science class