When Elizabeth left her house in the morning, her cell phone battery was partially charged. The charge remaining in Elizabeth's battery, as a percentage, can be

modeled by the equation B = 5t + 40, where t is the number of hours since

Elizabeth left her house. What is the x-intercept of the equation and what is its

interpretation in the context of the problem?

a

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).

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation: