Answer:
1. Answer is C
4. Answer is G
Step-by-step explanation:
I'm not sure how to explain 1 since I used a calculator.
Number 4 is where you choose a point on the line and count 4 blocks up and 5 blocks left. If it hits another point on the line then that's the graph.
Each curve completes one loop over the interval

. Find the intersections of the curves within this interval.

The region of interest has an area given by the double integral

equivalent to the single integral

which evaluates to

.
Multiply the top one by 3 for x, so you can eliminate x and find y
then plug in the y into one of the equations to find x
Answer:
3/4=21/28
Step-by-step explanation:
21/28÷7/7=3/4