3 algebra questions ill give brainliest!! no random answers or ill report.

14)$9,320.00. 15)Chen has 8 nickels, 2 dimes, and 6 quarters.     16)10%

Step-by-step explanation:

14)A = $9,320.00

I = A - P = $1,320.00

Equation:

A = P(1 + rt)

Calculation:

First, converting R percent to r a decimal

r = R/100 = 5.5%/100 = 0.055 per year.

Solving our equation:

A = 8000(1 + (0.055 × 3)) = 9320

A = $9,320.00

The total amount accrued, principal plus interest, from simple interest on a principal of $8,000.00 at a rate of 5.5% per year for 3 years is $9,320.00.

16)R = 1011.1111%/year

Equation:

r = (1/t)(A/P - 1)

Calculation:

Solving our equation:

r = (1/1)((1250/112.5) - 1) = 10.11111111

r = 10.11111111

Converting r decimal to R a percentage

R = 10.11111111 * 100 = 1011.1111%/year

The interest rate required to get a total amount, principal plus interest, of $1,250.00 from simple interest on a principal of $112.50 over 1 years is 1011.1111% per year.