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Magazine Chapter 1: Foundations
Q 1.50
Translate the English phrase into an algebraic expression:
(a) the sum of 17y2 and 19
(b) the product of 7 and y.
Q 1.52
Translate the English phrase into an algebraic expression:
(a) 13 more than z
(b) 18 less than 8x.
Q 154.
In the following exercises, simplify the following expressions by combining like terms.
Q 1.57
Geoffrey has dimes and quarters in his pocket. The number of dimes is eight less than four times the number of quarters. Let q represent the number of quarters. Write an expression for the number of dimes.
Q 1.6.
Write the number eleven billion, nine hundred twenty-one million, eight hundred thirty thousand, one hundred six as a whole number using digits.
Q 1.7.
Round to the nearest hundred:
Q 173.
In the following exercises, translate the phrases into algebraic expressions.
eight times the difference of y and nine
Q 175.
Eric has rock and classical CDs in his car. The number of rock CDs is 3 more than the number of classical CDs. Let c represent the number of classical CDs. Write an expression for the number of rock CDs.
Q 177.
Greg has nickels and pennies in his pocket. The number of pennies is seven less than twice the number of nickels. Let n represent the number of nickels. Write an expression for the number of pennies.
Q 179.
Car insurance Justin鈥檚 car insurance has a \(750 deductible per incident. This means that he pays \)750 and his insurance company will pay all costs beyond \(750. If Justin files a claim for \)2,100.
(a) how much will he pay?
(b) how much will his insurance company pay?
