The answer to the first question is $633.75=12.75h-42
The answer to the second one is 48
Answer:
20x + 13
Step-by-step explanation:
5(4x + 3) - 2
5× 4x + 5×3 - 2
20x + 15 - 2
20x + 13
Answer:
Step-by-step explanation:
The given quadratic must be rewritten in standard form before anything else is done: -2x^2 + 8x - 8 = 0. The coefficients of the x terms are {-2, 8, -8}.
The discriminant b^2 - 4ac is therefore (8)^2 - 4(-2)(-8), or 64 - 64, or 0.
A zero discriminant points to two real, equal solutions.
It is easier because you can see if your decimal answer is closer to the actual answer
30 miles, every 10 miles the percent drops .5%
We can set this equation up:
3 + .5x = 4.5
Subtract 3 from each side.
.5x = 1.5
x = 3
We multiply this by 10 since we factored it in the beginning.
We get 30.
