Emily invests $5,000 in an account that pays 4% simple interest. About how many years will it take for the account to double at this interest rate? A) 7 years
B) 60 years
C) 25 years
D) 27 years

B.60 Years

Step-by-step explanation:

100% = 5,000

200% = Double = 10000

4% x 60 = 240%

c) 25 years

Step-by-step explanation:

5,000 × 4%= 200

then divide the amount by the interest

5,000/200 = 25

it takes 25 years for the acount double at the interest rate.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32