a force of 1250 pounds compresses a spring 5 inches from its natural length. find the work done in compressing the spring 8 additional inches.

f=kd
1250=k5
k=250

then what do i do. i have to do this the calculus way, not the physics way. by using integrals

the answer choices are:
a.3250
b.21,125
c.18000
d.2000
e. none of these

are you in grade 12? do you wear ties and hats? is your middle name caleb? (im serious! i think i know you!)

and i am not sure about the question... sorry!