12. Find the value of the expressions when x=-3 and y = 4. a. xy - 2
b. x2 + 1
c. -269-5)
13. Solve the equations by thinking logically.
I
a. -8y = 96
b. –20a = -300
c. 36 – w= -6
y =
a
W=
4

12 a. -14

b. 10

c. 2

13. a. -12

b. 15

c. 42

Step-by-step explanation:

Substitute into the equation your values and Maths little skills.

answer: what statements

step-by-step explanation if you write the statements down then i could you.

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.