Danny charges $45 for 5 hours of swimming lessons, Martin charges $22 for 2 hours of swimming lessons. Who offers a better deal?

How do you do this geometry problem

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

Jocelyn estimates that a piece of wood measures 5.5 cm. if it actually measures 5.62 cm, what is the percent error of jocelyn’s estimate? a. 2.13% b. 2.18% c. 12% d. 46.83%