Solve the system using elimination. 5x + 7y = -31
5x – 9y = 17

A. (-4,-4)
B. (-5,-3)
C. (-2,5)
D. (-2,-3)

y=-3

Step-by-step explanation:

5x+7y=-31

(-) 5x-9y+17

16y=-48

16       16

y=-3

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

x> 6

step-by-step explanation:

8x+8> 7x+14

8x-7x> 14-8

x> 6