In: Advanced Math
For the following exercises, use the written statements to construct a polynomial function that represents the required information.
A rectangle has a length of 10 inches and a width of 6 inches. If the length is increased by x inches and the width increased by twice that amount, express the area of the rectangle as a function of x.
Consider the length of a rectangle is 10 inches and width is 6 inches.
Length is changed to l = 10 + x and width is changed to l = 6 + 2x.
e(m) = 3 + 2m
Express the area of the rectangle,
A = l × w
= (10 + x)(6 + 2x)
= 60 + 20x + 6x + 2x2
= 2x2 + 26x + 60
Hence, the expression is A(x) = 2x2 + 26x + 60.
Hence, the expression is A(x) = 2x2 + 26x + 60.