Adding and Subtracting Rational Expressions

What is a rate in mathematical terms?

• A comparison of two quantities measured in the same units

• A type of algebraic expression

• A comparison of two quantities measured in different units

• A method to calculate the speed of an object

How do you calculate a unit rate?

• Multiply the numerator by the denominator

• Divide the numerator by the denominator

• Add the numerator to the denominator

• Subtract the denominator from the numerator

What does a unit rate of '25 miles per hour' signify?

• 25 miles traveled in 25 hours

• Traveling 25 miles in one hour

• 25 hours to travel one mile

• One mile traveled in 25 hours

How is a unit price useful in shopping?

• To find the heaviest product

• To determine the largest quantity

• To compare costs per unit and find the best deal

• To calculate the total cost of multiple items

Which car traveled at a faster rate, Car A or Car B?

• Car A at 52 miles per hour

• Car B at 49 miles per hour

• Both traveled at the same rate

• The text does not provide this information

Which puppy is gaining weight faster, Max or Jojo?

• Jojo at 4 pounds per month

• Max at 3.5 pounds per month

• The text does not specify their rates

• Both are gaining weight at the same rate

Which option offers a better price per ounce of cereal?

• Option A at 35 cents per ounce

• Neither option provides good value

• Option B at 32 cents per ounce

• Both options have the same price

What is the cost per pound of ground beef in Option B?

• The text does not provide this information

• $10.50 for three pounds

• $3.80 per pound

• $3.50 per pound

Which fruit snack option is cheaper per pack?

• Option B at 30 cents per pack

• The text does not provide price per pack

• Option A at 25 cents per pack

• Both options cost the same per pack

Comparing the unit prices, which option is better for buying gas?

• The text does not provide enough information

• 5 gallons for $14

• 12 gallons for $33

• Both are priced the same per gallon