The vertex and the t-intercept where t>0, will help solve this problem. Sending the work on the attachment.
Answer:
13. 5 minutes
Step-by-step explanation:
This is a simple proportion problem. Make two fractions where one item is always on the top and the other on the bottom.

Now, cross multiply (multiply the two numbers diagonal from each other and divide the diagonal with the x value)
576 x 3 = 1, 728
1, 728 / 128 = 13.5
A) $55.00
65 yards for $85.00 subtract
20 yards for $30.00
85-30=55
The answer to your question is C
X | Y
-1 | -2
0 | 0
1 | 2
2 | 4
You would just multiply everything by two because in this case Y equals two X