Express 8.4km/min in km/hr

Please answer quickly i have exam tomorrow!!!

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.

Determine the function’s value when x = -1 a. g(-1)=-3 b. g(-1)=0 c. g(-1)=1 d. g(-1)=27

On average, the sunflower fruit mart sells 24 kilograms of apples daily with a standard deviation of 3 kilograms. if the market sells 38 kilograms of apples in one day, what is number of deviations from the mean? a. 5 b. 4 c. 4.66 d. 14