Answer:
Page 1:
Question 7: A.) 4p+3q+16
Question 8: D.) 8(2x+5y)
Question 9a: To simplify the expression you have to group similar
numbers. 8a-2b+12a-2a-4b
4b+8a <------- simplified equation
4(b+2a) <------- factored form
Question 9b: a=4, b=-2
4b+8a 4(-2)+8(4) -8+32 = 24
Page 2:
Question 1: C.) x-3
Question 2: A.) g=20
Question 3: A.) u=2
Question 4: A.) x=-8
Question 5: D.) t=5
Question 6: D.) infinitely many solutions
Page 3:
Question 7: D.) infinitely many solutions
Question 8: A.) r=-3/8
Question 9a: In step 1 Marcy forgot to add 20 to the other side of the
equation. She forgot the property of Addition Property of
Equality
Question 9b: 8m-20=36 (add 20 to both sides)
8m=56 (divide by 8)
m=7
Explanation: