Answer:
29
Step-by-step explanation:
1. plug in -10 for x
-2(-10) + 9
2. multiply -2 x -10 = 20
20 + 9
3. add 20 + 9 = 29
An expression for the cost will be 50+100n, where n is the number of cavities.
Answer:
D
Step-by-step explanation:
D is the only graph where the shaded region is on 6 and less.
Answer:
x = 9
Step-by-step explanation:
7x = 63
Divide each side by 7 to isolate x
7x/7 = 63/7
x = 9