A computer with software costs $2,938, and Catherine Stevens has agreed to pay a 19% per year finance charge on the cash price. If she contracts to pay the loan in 18 months, how much will she pay each month?

She will pay 209.74056 each month

Step-by-step explanation:

firstly our cost of computer software = 2938

now the  percentage rate of the finance charge per 18 months will be

finance charge rate per 18 months = (rate/12) * 18 =  (19/12) * 18 = 28.5% = 0.285

now we find the finance charge

Finance charge = finance charge rate period * cash price

Finance charge = 0.285 * 2938 = 837.33

now we find the installment price

Installment price = finance charge + cash price

Installment price = 837.33 + 2938 = 3775.33

Installment payment = installment payments/number of payment (months)

Installment payment = 3775.44 / 18 = 209.74056

therefore she will pay a sum of 209.74056 each months.

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1