Mathematics, 09.07.2019 05:00 ijohnh14

30 points explain the answer for both parts julianne opens a dance studio. her start-up costs for the building, advertising, and supplies total $52,000.each day, she spends $680 on operation costs (like utilities and wages). she earns 960$ per day from her students lesson fees. part a: write an equation or inequality to represent this situation let d be the number of days part b: when will julianne begin making profit

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A: $52,000 = D(-$680 + $960)

$52,000 is what Juli has to spend to get everything going. That is the number she has to hit before any money will be profit. Anything less than $52,000 is covering her startup costs.

Daily Juli has to also spend $680 so she is losing g money so it is negative. She is also gaining money from the business so the $960 is positive. Both amounts happen every day so both are multiplied by D (or number is days)

B: Juli is start making a profit on day 186

Solve for D by combining -$680 and $960 = $280
Juli will make $280 dollars every days after she pays her bills.

$52,000 = D($280)

We know how much we need ($52,000) and how much we will get every day ($280). Isolate D and divide 52,000 by 280.

52,000÷280=185.7142857143

185.7142857143 is greater than 185, so it will take Juli a min of 186 to make 52,000 and every $ after the $52,000 is now profit each day.

$280 per day for 186 days = $280 × 186 = $52,080

She will make $80 of profit on day 186

Answer from: Quest

168

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i am pretty sure that the answer is 168

Answer from: Quest

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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30 points explain the answer for both parts julianne opens a dance studio. her start-up costs for t...

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