Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range. y = 2 x squared minus x + 3
a.
D: all real numbers
R: (y greater-than-or-equal-to 2.875)
c.
D: (y less-than-or-equal-to negative 0.25)
R: (y less-than-or-equal-to 2.875)
b.
D: all real numbers
R: (y less-than-or-equal-to 3)
d.
D: all real numbers
R: (y less-than-or-equal-to 3.125)

$6.42

step-by-step explanation:

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).