A local book shop is selling $1 raffle tickets and is donating all proceeds to a local charity. They sold 6,500 tickets and plan to give away 30 gift certificated worth $25
and 50 gift certificates valued at $15.
1. Find the expected value of purchasing a raffle ticket. Round to the nearest
cent.
2. Explain what the expected value means in terms of the donation to the
charity.

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.

answer: you need to organize this better it does not make sense.

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).