The function f is given by f (x) = x2 + 2x. Which statement is true about the graph of f?
The graph has a y-intercept at (0,0)
The graph of the function opens upward
The x-intercepts are at (0,0) and (2,0)
The coordinates of the vertex are (1, -1).
The coordinates of the vertex are (-1, -1).

it would be:

c.parallelogram.

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).

x< -17/2 hope this