Answer:
$82 per hour
Step-by-step explanation:
Total cost to customer: $490
Cost for parts: $285
$490-$285 = $205
There is a total labor charge of $205.
The problem tells us that the customer paid for 2.5 hours of labor.
$205/2.5 hours = $82.00 per hour.
substitution
2x+y=5
y = -2x+5 (1)
3x-3y=3 (2)
1 ⇒ 2
3x - 3(-2x+5) = 3
3x+6x-15=3
9x=18
x=2
y = -2(2)+5
y = 1
Answer: 5 Units
C and D
2x^2 + 7x + 6
(2x + 3)(x+2)
x = -3/2 = -1.5
x = -2
The answer would be A) 4
