Question

??

Answer 1

we want 3 rectangles
we we want the left endpoint as x=-1
and the right endpoint as x=2
so that means for each rectangle to have equal base length we need to divide [-1,2] equally into 3 rectangles
we can do this be evaluating the base length first which is (2-(-1))/3=?

Answer 2

after we find the base length of each rectangle
we need to consider the height of each rectangle

Answer 3

so first have you determined the base length yet?

Answer 4

2/3

Answer 5

well 2-(-1) should get 2+1 which is 3 not 2

Answer 6

so (2-(-1))/3=3/3=1
so the base of each rectangle is 1 unit long

Answer 7

Okay