What is the value of 2x + 6y when x = 7.1 and y = 8.4

64.6

You can solve this by multiplying 7.1 by 2 (14.2) and then multiplying 8.4 by 6 (50.4) then adding the totals. (50.4+14.2 is equal to 64.6)

Hope this helped!

$900

Step-by-step explanation:

The formula for simple interest is I = PRT where I is the interest earned, P is the principal/amount deposited or borrowed, R = rate as a decimal, and T = time in years

I = PRT

I = (500)(0.04)(20)

I = 400

Add the interest to the principal, and she will have $900 in 20 years.

Please let me know if you have questions about this.