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

.
1. D
2. D
I don't know the answer to number 3 sorry.
Answer:
The answer is (5.)2,800.00
Answer:15
Step-by-step explanation:
Nine groups of 8 students and one group of 6 students. 9 x 8 = 72. 78 - 72 = 6.