Give ABC find the value of the variable if necessary round your answer to the nearest hundreaths

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?

The graph shows the function f(x) = (2.5)x was horizontally translated left by a value of h to get the function g(x) = (2.5)x–h.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16