Answer:
MARIA=14
ROBERT=7
Step-by-step explanation:
<u>Now</u>
MARIA=X+7
ROBERT=X
<u>In 2 years</u>
MARIA=X+7+2=X+9
ROBERT=X+2
<u>3 years a</u>go
MARIA=X+7-3=X+4
ROBERT=X-3
<u>EQUATION</u>
X+9=4(X-3)
X+9=4x-12
X-X+9=4x-x-12
9=3x-12
3x=21
X=7
MARIA=7+7=14
-27
3(-2)³-2-1 =
3(-8)-3 =
-24-3=-27
B. 7