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

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168