Devon Asked: I couldn’t figure out some questions on my science electricity review. Somebody help?

Insulators have ____________ resistance and _____________ current.
Conductors have ___________ resistance and _____________ current

3 differences between a series and parallel circuit:

- Series have one path of energy to follow and parallel circuits have more than one
_________?
_________?

How are magnets and electrical charges similar and different?

Which is better for protecting your appliances from being fried, a 15A fuse or a 25A fuse & why?

Thanks if you answer! And please no loooooooooooonnnnggg confusing answers, I just need a simple explanation. (:

Amber Asked: Math Application Problem HELP?

Please help me with answering all of this Math (Linear) Project?
PLEASE DO NOT POST IF YOU'RE NOT GOING TO HELP

Southwest Hosptial has an operating room used only for eye surgery. The annual cost of rent, heat, and electricity for the operating room and its equipment is $180,000 and the annual salaries for the people who staff this room total $270,000.

Each surgery performed requires the use of $380 worth of medical supplies and drugs. To promote goodwill, every patient recieves a bouquet of flowers the day after surgery. Inaddition, one-quarter of the patients require dark glasses, which the hospital provides free of charge. It costs the hospital $15 each bouquet of flowers and $20 for each pair of glasses.

The hospital receives a payment of $1000 for each eye operation performed.

1. Identify the revenue per case and the annual fixed and variable costs for running the operating room? Write the revenue and cost as functions R(x) and C(x).

2. How many eye operations msut the hospital perform each year in order to break even?

3. SW Hospital currently averages 70 eye operations per month. One of the nurses has just learned about amachine that would reduce by $50 per patient the amount of medical supplies needed. It can be leased for $50,000 annually. Keeping in mind the financial cost and benefits, advise the hospital on whether it should lease this machine.

4. Ad advertising agency has proposed to the hospital's president that she spend $10,000 per month on television and radio advertising to persuade people that Southwest Allentown Hospital is the best place to have an eye surgery performed. Adversiting account executives estimate that such publicity would increase business by 40 opertions per month. If they are correct and if this increase is not big enough to affect fixed costs, what impact would this adversiting have on the hospital's profits?

5. In case the advertising agency is being overly optimistic, how many extra operations per month are needed to cover the cost of the proposed ads?

6. If the ad campaign is approved and subsequently meets its projections, should the hospital review its decision about the machine discussed in Question 3?