I don't know the answer to y=48,000(1-13.2)6

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Askateboard ramp is in the shape of a right triangle what is the height of the ramp