Proportional Relationships
Determine which price scenarios are proportional: 1) 3 lbs for $4.50; 2) $2.00 per pound plus a $0.50 fee; 3) 5 lbs for $6.00 and 10 lbs for $12.00.
1 and 3
If a school has 600 students, this is the number of students who ride the bus if 20% of them do.
120 students
This is the scenario that represents quantities combining to make 0: A stock rises $2.50 then falls $2.50 OR A car drives 10 miles east then 5 miles west.
A stock rises $2.50 then falls $2.50
This statement represents opposite quantities: Gaining $50 and spending $50 OR Climbing up 15 feet and down 10 feet.
Gaining $50 and spending $50
If a parking garage charges $15 for 3 hours, this is the cost for 7 hours.
$35
A baker makes 7 cakes per hour. What is the number of cakes completed in 25 hours?
175 cakes
Sales increased from $500 to $600 (Store X) and $200 to $240 (Store Y). Which store had a greater percent increase?
Neither (Both had a 20% increase)
The simplified value of the expression $20 \div (-4)$.
The Opposite of 5 (or -5)
A weather balloon is 500 feet above the ground and descends 750 feet. This is its final altitude.
-250 feet (or 250 feet below ground)
A city has a 9% sales tax. This is the correct total price (including tax) for a $50 item.
$54.50
Taxi A charges $6 for 2 miles and $12 for 4 miles. Taxi B charges $8 for 2 miles and $14 for 4 miles. Which taxi service is proportional?
Taxi A
A sofa costs the store $800. The store marks down prices by 25%. This is the correct sale price.
$600
A pipe leaks at a rate of 4 pints per minute for 1 hour. This is the number of gallons of water lost (1 gallon = 8 pints).
30 gallons
A company's monthly values are $10,000, -$5,000, -$2,000, and $1,000. This is the total distance between the highest and lowest values.
$15,000
The sale price for Item A, which costs $250 with a 40% discount.
$150.00