Which statement regarding the sinusoidal functions, sine and cosine, is true? A)since cos is an even function, cos(-x) = -cos(x)
B)since some is an odd function, sin(-x) = -sin(x)
C) the sin function can be flipped over without change to either the x-axis or y-axis
D)the cosine function can be flipped over the x-axis without change

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).

the second option

step-by-step explanation:

step-by-step explanation:

what was your answer?