Bill is saving for his son's college education. if the savings account earns 5% interest compounded monthly, and he wants to have $45,000 in 10 years, what must the principal be?

Total money that will be in the account in 10 years = 45000

Time period = 10 years

Rate of interest = 5% or 0.05

n = 12 (number o times the money is compounded)

Let the principal (p) be = x

Formula for compound interest =

Putting the values in the formula we get,

Hence, the principle amount should be approximately $27881.

the equation is not included but the answer is (1.50, 2.00, 2.75)

step-by-step explanation:

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

brainliest is always apprectiated