A company finds that if it charges x dollars for a cell phone, it can expect to sell 1,000 - 2x phones. The company uses the function r defined by r(x) = x-(1,000 - 2x) to model the expected revenue, in dollars, from selling cell phones at x dollars each.
At what price should the company sell their phones to get the maximum revenue? Explain your reasoning

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

idk

step-by-step explanation:

payback

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24