Equations
MJ Supply distributes bags of dog food to pet stores. Its markup rate is 28%. Which equation represents the new price of a bag of dog food, y, given an original price, x?
y=1.28x
A certain airline charges a service fee of 7% for each plane ticket purchased. What is the total price the airline charges for a $320 plane ticket?
$342.40
Miguel’s Skate Shop is having a sale on skateboards. The original price for its Extreme Skateboard is $84.50. The sale price for the skateboard is $50.70. What is the percent decrease in the price of the skateboard?
40%
Ms. Ling purchases a new car for $32,000 and finances it with a 6-year simple interest loan at an annual rate of 4.25%. What are Ms. Ling’s monthly car payments rounded to the nearest cent?
$557.78
There are ___ ways to make change for a U.S. dollar.
293
Janella is having her hair styled and wants to tip her stylist 18%. Write an equation that Janella can use to calculate the tip, y, if her total bill is x dollars
y = 0.18x
A group of friends’ dinner bill before tax is $87.50. The sales tax rate is 5%. They want to leave a 15% tip after tax. What is their total dinner bill, including tax and tip, rounded to the nearest cent?
$105.66
A manufacturer packages coffee beans in 50 kg cartons with an allowable error of 0.7%. What is the acceptable weight range for a carton of coffee beans?
49.65 to 50.35 kg
Marisol deposits $5,000 in a savings account earning 5.75% simple interest per year. How much interest will Marisol earn for a period of 5 years?
$1,437.50
Newborn babies have nearly ___ more bones than full-grown adults.
100
Mr. Sharma and his family are having dinner at a local restaurant. He wants to give the server a 15% gratuity, and the restaurant’s sales tax is 6.5%.
Write an equation to be used to find the total paid to for the meal.
y=1.215x
Last year’s computer models are discounted 20%. If a computer is on sale for $1,480, what is the original price of the computer rounded to the nearest dollar?
$1,850
Which of these has a different percent change?
A: 150 to 132
B: 275 to 242
C: 300 to 255
12%
12%
C: 15%
Marisol deposits $5,000 in a savings account earning 5.75% simple interest per year. How much interest will Marisol earn for a period of 5 years?
Marisol receives $8,450 when she closes her savings account. If she made no changes to the account, for how many years did Marisol keep the account open?
12 years
Earmuffs were invented by a ___-year-old.
15
Tyrone buys office supplies for his home business. The office supplies cost $175.79 before tax. The sales tax rate is 8.25%. How much sales tax does Tyrone pay for the office supplies rounded to the nearest cent?
$14.50
A research company surveys people in a community about a new recycling program. The company expects 6,000 people to respond favorably. If there is a percent error of 2.5%, what is the range of the number of people who are expected to respond favorably to the survey
5,850 to 6,150
Talia sells educational software for a yearly salary of $65,000 plus a 2.65% commission on her total sales. If Talia sells $2.5 million of software during one year, what are Talia’s earnings for that year?
$131,250
Queen Elizabeth II has had over ___ corgis in her lifetime.
30
Monty buys hats in bulk to sell in his store. His cost for each hat is $17. He marks up the hats 45%. How much does Monty charge per hat?
$24.65
Editor Bennett Cerf challenged Dr. Seuss to write a book using no more than ___ different words. The result? Green Eggs and Ham
50