Answer:
Step-by-step explanation:
?=4
?*(3+2)=12+8
?(5)=20
20/5=4
4*(5)=20
20=20
B. -90
a1=9; d=-3
a34=9-3(33-1)=-90
7x - 15 = 4x - 12
3x - 15 = -12
3x = 3
x = 1
y = 7(1) - 15
y = 7 - 15
y = -8
(1, -8)
4 i guess i dont rlly know
-8
plz watch all steps in picture
