Using rectangles, recall that 3(x+2) would represent the area of a rectangle with dimensions 3 and x+2.
How would you represent 3(x+2)-2(x+1) using the areas of rectangles?

i may be incorrect but i believe that her first error was in step one when she multiplyed her equation by 1/4 when she should have divided it by 1/4

step-by-step explanation:

total time = time to school + time from school

t = (x − 8y) + (2x − 4y)

combine like terms:

t = 3x − 12y