Anew house costs $260000. sara wants to buy the house and needs $35560 for a down payment. sara currently has $28000 in a savings account that earns 9% simple interest. how long must she keep the money in the savings account in order to have enough for the down payment on the house

The formula for the value (A) of such an account with principal value P is ...

... A = P + P·r·t

where r is the interest rate and t is the number of years.

Filling in the given numbers, you have

... 35560 = 28000 + 28000·0.09·t

Subtracting 28000 and dividing by the coefficient of t, you have

... 7560/2520 = t = 3

Sara must keep the money in the account for 3 years to earn enough for a down payment.

step-by-step explanation:

through just a quick inspection, one can see that the graph of this cubing function starts in quadrant iii and ends in quadrant i.   when x = 0, y = 3, so the y-intercept is (0, 3).

if graphs are part of the problem statement, share them.   .