Factor 60y-90-20x60y−90−20x60, y, minus, 90, minus, 20, x to identify the equivalent expressions.

It is 5.8 you add all of the up to equat 180 then solve the equation

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.

7x the number of visitorsex. 3 visitors would be 7 x 3 =21$ total