The regular period is 2pi. If you look up or type in a graphing calculator you can see that's when the sine function starts to repeat itself.
1837440 inches are in 29 miles
I can't answer unless you can provide a picture. Send a pic and I'll help!
Start at the point (2, -3) and then go up 3 and to the right 4 a few points and then go down 3 and to the left 4 a few points and then from there you can get an equation out of it
1/2 in. = 5 miles
1 in. / 2 = 1/2 in.
8 * 2 = 16
16 * 5 = 80 miles
