A cashier at the grocery store rung up 2 customers in 5 minutes. At this rate, how many customers can he ring up in 40 minutes.

Do you need with the x value for the minimum? its always between the two intercepts for a parabola

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.

Xis -1/2
y is 35/4.