Which equation represents exponential decay? 100
O A. y = 100 (31)
O B. y = 10 (3.1)
O C. y = 10(0.13)
O
D. y= 100(1.03)
HELP PLEASE ON TEST!!

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°