James is building a rectangular fire pit . He dug a joke 20 inches by 20 inches . He decides to make each side of the fire pit 4 inches longer instead . What is the percent increase in the area of the fire pit

44%

Step-by-step explanation:

the area of a rectangle = Length × Breadth

original  area of james pit = 20×20=400in²

new size = 20 + 4 =24 inches

new area = 24 × 24=  576in²

increase in area = 576 - 400 = 176

percentage increase = × 100

                                   = × 100

                                   =0.44 × 100

                                   =44%

percentage increase in area is 44%

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!