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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

3. Simplifying Radical Expressions

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Exercise 61 Page 250

Translate the given information into algebraic expressions, then write a formula for her total income.

$507.50

Practice makes perfect

We are given that Miki earns $ 10 an hour and 10 % in commission on sales. We want to find how much she made if she worked 38 hours and had a total sales of $1275. Let h be the number of hours she worked and S be the total sales. From here, we will write a formula for her total income T.

Verbal Expression	Algebraic Expression
Hourly Income ($)	10 h
Commission Income ($)	0.10 S
Total Income ($)	T=10 h+0.10 S

Now, by substituting h= 38 and S= 1275 into our equation, we can find how much she made last week.

T= 10h+0.10S

h= 38, S= 1275

T=10( 38)+0.10( 1275)

Multiply

T=380+127.50

Add terms

T=507.50

Therefore, Miki made $507.50 last week.

Subchapter links

Exercises p.248-250