PLEASE HELP-
Haley has decided to invest money into a savings account with Prosper Savings and Loan. They have offered her a 7% simple interest rate. If she invests $1400 for 4 years, how much INTEREST will Haley earn?

She will earn $392 in interest over this 4-year period.

Step-by-step explanation:

The formula for simple interest is i = p*r*t, where p is the principal, r is the interest rate as a decimal fraction, and t is the number of years.

Here i = $1400(0.07)(4) = $1400(0.28) = $392

She will earn $392 in interest over this 4-year period.

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!