The number of hours that 20 people spent watching television per day, in relation to age, is graphed. This quadratic equation represents the model for the set of data
y = 0.004x^2 - 0.314x+ 7.5
Based on the model, approximately how much time does an 18-year-old spend watching television each day?

false

step-by-step explanation:

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides

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).