un objeto de 750 kg de masa en movimiento en línea recta y velocidad constante un tramo de 60.0 m de superficie sin fricción

you can use a^2+ b^2=c^2

i believe a. 12x≥120 is the answer

8.75

how-to:

first, we need to find what we have to work with.

since i know that we have 7 (years) and 0.8 (inches), we can use these to solve and find the equation!

secondly, what you want to do, is see that we need to know how much growth out of the 0.8 inches he got in only 1 year, instead of 7 years.

let's try to divide.

7 ÷ 0.8 = 8.75