Question 781947
 y = 18x + 370 
 y = 46x + 170 

These two lines intersect at the point where the x value is equal to ? 

I set the equations equal to each other.

18x+370=46x+170 subtract terms
28x=200 divide 
x=7.14

But when I check 7.14 is wrong.
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If it's a computer entry, you might need to enter 50/7 for the answer.
7.14 is not wrong (to 2 decimal places), but might not be what's expected.
It's a weakness, or problem, of online courses.