Answer:
a and c
Step-by-step explanation:
(0, 207)
We calculate y-intercept by substituting 0 for x.
The equation becomes:
3*62-6*(0)+21=207
y intercept is (0, 207)
The frequency increases as the pitch increases, and the amplitude increases as the volume increases
5
Add the numbers together, then divide that by the amount of numbers
(2 + 7 + 6 + 1 + 9 + 2 + 4 + 9)/8
40/8 = 5
