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iren2701 [21]
3 years ago
12

Answer either one because I don’t kno how to solve them

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
6 0

we have that

y = 3x + 5

and that

z = x² + 2x - 5

we want to know what yz or y·z is equal to

we have what y and z are equal to so we can multiply them together

(3x+5)(x²+2x-5)

first we multiply each value in the second set of parentheses by 3x and then multiply each value in the second set of parentheses by 5 and then combine like terms.

(3x+5)(x²+2x-5)

3x³+6x²-15x + 5x² +10x -25

3x³ + 11x² -5x -25

so your answer should be

D) 3x³+11x²-5x-25

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Question:

A salesperson earns commission on the sales that she makes each month.

The salesperson earns a 5% commission on the first $5,000 she has in sales.

The salesperson earns a 7.5% commission on the amount on her sales that are greater than $5,000.  

Part A:

This month the salesperson had $8,000 in sales. What amount of commission, in dollars, did she earn?

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Answer:

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Step-by-step explanation:

<h3><u>Part A </u></h3>

Given:

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Solution:

The commission she earns = Commission 1+ Commission 2----------(1)

Commission 1 = 5% of 5000

Commission 2  = 7.5 % of (8000- 5000}

Finding commission 1:

= 5% of 5000

= \frac{5}{100} \times 5000

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Finding commission 2:

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= 0.075 \times 3000

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Substituting (2) and (3) in (1)

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<h3><u>Part B</u></h3>

Given:

Total commission earned = $1375

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The total sales amount = ?

Solution ;

Let the sales amount be x

Then

1375 = 5% of  5000 + 7.5 % of (x -5000)

1375 = 0.05 \times 5000 + 0.075 \times (x -5000)

1375 = 250 + 0.075x - 375

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1375 +125 = 0.075 x

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