PRACTICE SET
C
Plug in a = 3, b = 6, and c = 5.
1.
J
Because we are told the value of d, we can plug it into the equation to find the value of c. We are told that d = 1, so
can be rewritten as Since is the same as c, we can rewrite the equation again as c = 3. Now we can plug the
values of c and d into the expression: 3(3) + 1 = 10.
2.
D
We are told that y = 8, so first we will replace the y in the equation with 8, and then we can solve for x.
Now we can add 7 to both sides:
Next we divide both sides by 5:
3.
G
Here we have three values to plug in. Remember, xz means x times z. After we plug in the values of x, y, and z, we will do
the operations in PEMDAS order—Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.
4.
5. B
