Julianne opens a dance studio. Her start-up costs for the building, advertising, and supplies total $52,000. Each day, she spends $680 on operating 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 lulianne begin making a profit? Show all the work you did to arrive at your answer

Question

contestada

Respuesta :

InesWalston InesWalston · Answer 1 · 2018-10-01T08:01:06+02:00

Answer-

[tex]A - Inequality \ equation= 960d-680d > 52000[/tex]

[tex]B -Julianne \ begin \ making \ a \ profit \ after \ 186 \ days[/tex]

Solution-

Julianne's start-up cost = $52,000

Daily operating costs = $680

Daily earnings = $960

And the number of days = d

The inequality that represents this situation,

[tex]960d-680d > 52000[/tex]

⇒[tex]d(960-680)>52000[/tex]

In order to be in profit, she must surplus the initial investment and the daily expenses. The time taken by her to be in profit,

[tex]d>\frac{52000}{960-680} > 185.71 \approx 186[/tex]

⇒ [tex]d > 186 \ days[/tex]

∴ So after 186 days of starting the business, she will start making profits.