A 2-ton truck is taxed at a rate of $0.12 per pound.How much is the total tax bill?
Answer(s): A
2 tons = 4,000 pounds. 4,000 × $0.12 = $480.00.
If ab = 10, and a2 + b2 = 30, solve for y in the equation, y = (a + b)2.
Answer(s): C
y = (a + b)2. Expanding the equation results in y = a2 + b2 + 2ab. You know that a2 + b2 = 30, and ab = 10. When you substitute these known values into the equation, you get y = 30 + 2(10). Solving for y, results in y = 50.
A half-pint of cream is what part of a gallon?
8 pints make up a gallon, so a gallon contains 16 half-pints. One half-pint equals 1/16 of a gallon.
The cost of a protein bar increased from $2.50 to $2.80.How much was the percent increase to the $2.80 rate?
Answer(s): D
First subtract the old cost from the new cost: $2.80 $2.50 = $0.30. Then divide the difference by the old cost to find the percent difference: $0.30 ÷ $2.50 = 0.12 = 12%.
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