Answer: The first one : -2x^2 + 20x - 54
Step-by-step explanation:
y = -2(x-5)^2 - 4
= -2(x^2 - 10x + 25) - 4
= -2x^2 + 20x - 50 - 4
= -2x^2 + 20x - 54
Answer=
72
hope this helps
:)
Answer:
12x-39
Step-by-step explanation:
-7+4(3x-8)=-7+12x-32=12x-7-32=12x-39
9. Answer: It's a proportional relationship, since every hour he charges $6.25.
Work: there is no work, but you did need the linear equation, which you have written in question 11,
10. Answer: Ratio of how much Steven charges per hour,

Work:

12. Answer: $18.75
Work: