1.
what is the value of z in the equation 5z – 9 = 36? (4 points)
4
5
6
9
2.
what is the value of z in the equation 5(2z + 4) = 0? (4 points)
-2
0
2
20
3.
what is the value of a in the equation 4a + 3(a + 1) = 24? (4 points)
2
3
7
21
4.
an equation is shown below:
3(4x + 5) = 12
which of the following correctly shows the beginning steps to solve this equation? (4 points)
step 1: 12x + 15 = 12
step 2: 12x = –3
step 1: 12x + 5 = 12
step 2: 12x = 7
step 1: 7x + 5 = 12
step 2: 7x = 7
step 1: 7x + 8 = 12
step 2: 7x = 4
5.
how many solutions can be found for the equation 4x – 8 – 4x = 9? (4 points)
zero
one
two
infinitely many