Answer:
See Explanation
Step-by-step explanation:
Given

Required
Determine the number of truckloads ordered
The question is incomplete as the total number of trucks were not given.
Assume the number of trucks is x.
The ordered truckloads would be:

Assume x is 100


Alright, the zeroes are where it intersects with the X-axis so...
4) -15 and 10
5) 6 and 18
6) -5 and 0
7) -20 and -8
8) 2 and 10
9) -21 and 14
Hope I was able to help you :)
Answer:
16, 74
Step-by-step explanation:
3x +10 + 12x +50 = 90
15x + 60 = 90
15x = 90 -60
15x = 30
x = 30/15
x = 2
3x + 10 = 3*2 +10 = 6 +10 = 16
12x + 50 = 12*2 +50 = 24 + 50 = 74