Jim has calculated the area of a rectangle to be x3 + x2 + x + 1. if the width of the rectangle is x + 1, then its length is

x^2 + 1

Step-by-step explanation:

Since area = width*length, we need to divide x^3 + x^2 +x + 1 by x + 1 using long division. Since x+1 is a factor of the numerator the fraction simplifies to x^2 + 1

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.