what do i have to do to solve this?

Khety must save $5050 for a down payment on a car. He currently has $1925 in an account yielding 6.5% simple interest. If he saves no additional money, how long until he has enough for the down payment?

Future value = Present value (1 + interest rate)^n, where n = number of years.

5050 = 1925(1.065)^n

Rearranged n= (log 5050 - log 1925)/log (1.065)

a couple invests $4500 in an account paying 7% compounded quarterly. how much is in the account after one year?

a sequence of yearly payments of $6000 is invested at an interest rate of 4.5%, compounded annually. what is the total amount of the annuity after 12 years?

To solve this problem, you need to use the formula for simple interest:

I = P * r * t

Where:
I = Interest
P = Principal amount (initial amount)
r = Interest rate
t = Time (in years)

In this case, you know the following:

P = $1925
r = 6.5% or 0.065 (in decimal form)

You want to find the time, t, it will take for the money to grow to the amount needed for the down payment, which is $5050.

To isolate t in the formula, you can rearrange the formula to solve for t:

t = I / (P * r)

First, calculate the interest, I, for the desired down payment amount:

I = $5050 - $1925

Next, plug in the values into the formula:

t = (5050 - 1925) / (1925 * 0.065)

Simplifying the calculation:

t = 3125 / 125.125

Dividing the numerator by the denominator:

t ≈ 24.94

Therefore, it will take approximately 24.94 years for Khety to have enough money for the down payment on the car, assuming he saves no additional money during this time.