1. Simplify –11(t + 1). A. 11t + 11 B. -11t + 1 C. -11t – 11 D. 11t + 1 Hint 2. Simplify –20(z – 5). A. 20z – 5 B. -20z – 5 C. -20z + 100 D. 20z + 100 Hint 3. Write 7 · 7 · 7 · 7 · 7 in exponential form. A. 77 B. 75 C. 55 D. 57 Hint 4. Write 10 · 10 · 10 in exponential form. A. 310 B. 13 C. 31 D. 103 Hint 5. Identify the like terms in the expression 2n + 8 - 5n + 2m. A. 2n, 2m B. 8, -5n C. 2n, -5n D. no like terms Hint 6. Identify the like terms in the expression 13 + x + 4 + y. A. x, y B. 13, 4 C. no like terms D. x, 4 Hint 7. Rewrite (4s + 3t) + (11s + 2t) using parentheses so that the like terms are grouped together. A. (4s + 2t) + (3t + 11s) B. (4s + 3t + 11s + 2t) C. (4s + 11s) + (3t + 2t) D. There are no like terms. Hint 8. Rewrite 9q - 5r as an addition expression by using the additive inverse. A. 9q + (-5r) B. (-5r) + 9q C. 5r - 9q D. 9q + 5r Hint 9. Rewrite 2b - 8 as an addition expression by using the additive inverse. A. 2b + (-8) B. 2b + 8 C. (-8) + 2b D. 8 - 2b Hint 10. Write 2 · 2 · 9 · 2 · 9 using exponents. A. 23 · 93 B. 23 · 92 C. 32 · 29 D. 8 · 92 Hint