A salesman who makes $32,500 a year gets promoted to sales manager, earning a new salary of $43,250. What was the rate of increase for the salesman?

33.1%

Step-by-step explanation:

First, calculate the dollar amount of the increase.  Subtract $32,500 from $43,250.  We get $10,750.

Next, divide this $10,750 by the original salary, $32,500, to determine what fraction of $32,500 is represented by $10,750:

fraction = $10,750/$32.500 = 0.331

Convert this to a percentage by multiplication by 100%:  33.1%

The rate of increase of the saleperson's salary was 33.1%.

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!