Answer: After 5 hours, Mary will be at the break even point.
To answer this question, we need to find the time when the cost equals the revenue.
Therefore, set our equations equal to each other and solve.
20 + 30h = 10h^2 - 80
0 = 10h^2 - 30h - 100
0 = h^2 - 3h - 10
0 = (h - 5)(h + 2)
Our solutions are h = 5 or h = -2. Only 5 hours makes sense in the context of this problem.
Answer:
b
Step-by-step explanation:
0.13 0.19 0.3 and 0.31 just in case you didnt know 0.3 =.030
(2,0,-1,-1,-2) that is the domain from what I remember. Hope that help
Answer:
D 16% increase
Step-by-step explanation:
This is ez
just did this stuff in pre algebra
