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shtirl [24]
2 years ago
5

an online electronics store bought 24 keyboards and 15 phone chargers for $120 and then sold each keyboard for $35 and each phon

e charger for $15. part a: which expression represents the amount of money the store made? (1 point) (24)(15) (15)(35) − 120 (24)(35) (15)(15) − 120 (24)(15) (15)(35) 120 (24)(35) (15)(15) 120 part b: explain why your answer to part a is correct. (1 point) part c: what is the value of the expression you chose in part a? show each step of your work. (2 points)
Mathematics
1 answer:
sweet-ann [11.9K]2 years ago
3 0

The Amount made by store is expressed as 24(35) + 15(15) - 120. This is correct because profit = selling price - cost proce.

<h3>How to use order of operations?</h3>

The order of operations to be used is PEMDAS which is an acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction.

Now, we are told that an online electronics store bought 24 keyboards and 15 phone chargers for $120.

Now, they  sold each keyboard for $35 and each phone charger for $15. Thus, the expression to show the amount of money the store made is;

Profit = Selling Price - Cost Price

Thus, we have;

Amount made by store = 24(35) + 15(15) - 120

Read more about Order of operations at; brainly.com/question/345677

#SPJ1

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If he answered 3 questions correctly, then the number of questions is got wrong is 7 and the number of questions that he did not attempt is 5.

<h3>What is the linear system?</h3>

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

In a class test of 15 questions, (+4) marks are given for every correct answer, (– 2) marks are given for every incorrect answer, and 0 marks are given for questions that are not attempted. Punit scored (– 2) marks.

If he answered 3 questions correctly, then the number of the question are got wrong and the number of the question that he did not attempt.

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4x – 2z = A

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More about the linear system link is given below.

brainly.com/question/20379472

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