Percents
A jacket originally costs $40. It is now on sale for $30. What is the percent markdown?
It was 25% off.
What is the first full day of summer?
June 22
What is one similarity and one difference between proportional relationships and linear relationships.
Different: Proportional relationships must start at the origin.
How many sports can you play at Meany Middle School?
Five sports: Track, Basketball, Soccer, Volleyball, Ultimate Frisbee
x+5=12
x= 7
A phone’s price increases by 10% one year, then decreases by 20% the next year. The original price was $500. What is the final price?
$440
How often do the Summer Olympics happen?
Every 4 years.
A recipe uses 3 cups of flour for every 2 cups of sugar. How many cups of sugar are needed for 9 cups of flour?
6 cups of sugar
How many professional sports teams does Seattle have?
Bonus points awarded to teams that can name all of them!
Seven!
Mariners, Seahawks, Sounders, Storm, Kraken, OL Reign, Seawolves.
2x+3=11
x= 4
An engineer’s calculated value was 5% too high. The actual value was 80. What value did the engineer calculate?
84
What is the average length of time for summer break (in weeks) in Public Schools in the United States?
A graph shows a straight line through the origin and the point (4, 10).
What is the constant of proportionality (k), and what is the equation of the line?
k= 2.5
y= 2.5x
What does it mean to hit for the cycle in Baseball?
A) Get to all the bases in a game.
B) Hit a single, double, triple, and a home run in the same game.
C) When a pitcher faces every batter in one inning.
D) Steal every base in one game.
It means that a player hits a single, a double, a triple, and a home run in the same game.
3/4 x + 4= 13
12
A person expected to earn $313 simple interest in 4 years from a $2,500 investment at 3% annual interest.
a) How much interest should they have actually earned in 4 years?
b) What is the percent error in their prediction?
a) $300 in interest over 4 years
b) 4% error
What is the hottest temperature ever recorded in the world and what country was it recorded in?
*Full points awarded to teams with correct country and temperature within 5 degrees of actual hottest temperature.
134 degees in Death Valley USA
A gym charges a $25 sign-up fee and $10 per month. Write an equation to model the total cost C after m months.
What is the cost after 6 months?
$85
How many sports were in the first Olympics? Bonus points awarded if you can name the sport(s)!
A) 5 sports C) 1 sport
B) 8 sports D) 32 sports
One sport- 192m run
2(x+4)+3=5x−1
4
Nico and Philip both open savings accounts. Philip's principal is $535 and he earns 0.8% compound (applied to current balance, not original) interest yearly. Nico's principal is $500 and he earns 1.5% compound interest yearly. Who will have a balance of $600 in their bank account first and how many years will it take them to reach this point.
What event marks the summer solstice?
A) When the sun is directly over the equator.
B) When the sun is directly over the Tropic of Cancer (23.5 North)
C) When the sun is directly over the Tropic of Capricorn (23.5 South)
D) When the sun is directly above Seattle.
When the sun is directly over the Tropic of Cancer (23.5 degrees North).
Find the point of intersection between the lines:
y=2x+3 and y=−x+9
(2, 7)
How many times have Seattle sports teams (Seahawks, Mariners, Storm, Kraken) been to their respective championship finals?
Double points will be rewarded to any team who can name the number of times each of those teams has been!!
7 times
Seahawks- 3 Superbowl appearances
Mariner- 0 World Series appearances
Kraken- 0 Stanley Cup Finals appearances
Storm- 4 WNBA finals appearances
2x + y= 15
4x + 3y= 39
x= 3
y= 9