Your sister is getting married this summer and she has asked you to her select a d. j. for the big event. you called around and found the dave the d. j. charges a $150.00 set up fee, plus $10.50 per hour. you discover marvin’s mobile music machine has a $135.00 set up fee, plus $15.00 per hour. problem solve with your group to determine which d. j. will you recommend to your sister? write a letter to your sister to your sister which d. j to recommend. a > > letter<

I would recommend DJ Dave to my sister if the weeding would last more than 3.3 hours because he would be cheaper.

Equation

An equation is an expression used to show the relationship between two or more numbers and variables.

Let y represent the total cost of DJ for x hours. Hence,

For Dave:

y = 10.5x + 150

For Marvin:

y = 15x + 135

15x + 135 > 10.5x + 150

x > 3.3 hours

I would recommend DJ Dave to my sister if the weeding would last more than 3.3 hours because he would be cheaper.

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So Dave charges 150 at first and then 10.50 per each hour, so if your sister has the party going for say "h" hours, then his total charges will then be 150 + 10.5h.

now, Marvin's Mobile Music charges 135 at first, but then is more expensive per hour is 15 bucks per each hour, so if she has a party for "h" hours, then his total charges are 135 + 15h.

now, let's check when they're both equal, at how many hours will they cost your sister the same amount.



so, 3 and a third of a hour, or 3 hours and 20 minutes, they both will cost your sister the same amount, so it wouldn't matter who's hired if the party is only 3 hours and 20 minutes long.

however, after that, the one with higher hourly rate, Marvin's, gets more expensive, and she's better off hiring the one with cheaper hourly rate.

now, you can just get some mp3s and some loud speakers and nevermind the  DJs and you do it, or she can do it, I have the macarena song if you need that one.