Luke rides his bike 20 miles in 4 hours. if he rides at a constant speed, select the answers here that are equivalent ratios to the speed he rides. a: 30 miles in 7hrs b: 25 miles in 6 hours c: 10 miles in 1 hr d. 15 miles in 3 hrs

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.