The formula for the amount of simple interest earned on an investment is I = Prt, where I is the interest earned, P is the principal, or amount invested, r is the interest rate as a decimal, and t is the time the investment is left in the bank (in years). Find the amount of interest earned on an investment of $4000 at 0.85% interest after 4 years.

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

13.46

step-by-step explanation:

16.80 x .20 = 13.46