percentage change
A chess club had 12 members last year. Now they have 18 members what was the percent change?
50%
simplify the ratio 12:8
Paul earns 14$ after washing cars for 2 hours and 21 after 3 hours. What is his unit rate?
$7 per hour
A bank offers 2% simple interest. How long will it take for a $800 principal to earn $100 in interests
6.25 years
Two angles are complementary. If one angle is 35' , what is the measure of the other angle?
55.
The population of a town was 8980 and the town's population went up by 55%. What is the population of that town?
13919
there are 540 cats and 675 dogs on a island.What is the ratio of cats to dogs in its simplest form?
4:5
Pual earns money washing cars. After 2 hours, he earns 14$. After 3 hours, he earns 21$. Write an equation to represent his total earnings
y=7x
If a $1000 investment earns $100 in simple interest over 4 years, what is the annual interest rate?
The interest rate 2.5%
Two angles are supplementary. If one angle is 110', what is the measure of the other angle?
supplementary angles add up to 180. 180-110=70
A TV's original price was 300$, but now it is on sale for 225. What was the percent change?
A bag has 30 marbles. The ratio of red to blue is 2:3. How many are blue
18 blue marbles
Is the relationship between the number of different-sized books and their total weight proportional?
No. Because each book has a different weight, the total weight cannot be found by multiplying the number of books by a single constant
Liam has 200$ in a savings account that earns 5% simple interest annually. How much interest will he earn in 1 year
Liam will earn $10 in interest
Two lines intersect. If one angle is 60, what are the measures of the other three angles?
The vertical is 60'(equal). The adjacent angles are supplementary(180-60=120)
A video game was originally priced at 40$ now it is priced at 50$. What was the percent change?
25% increase
in a fish tank, the ratio of red fish to blue fish 3:5 if there are 20 blue fish how many red fish are there?
12
Melissa spends a proportional amount of time building porch swings. If it takes her 4 days to build 2 swings, how many days will it take her to build 18 swings
36 days
Jack bowwows 8,000 at a 12% simple interest rate for 5 years to buy a motorcycle. What is the amount he must pay back?
Jack will pay back a total of 12,800
Three angles sit on a straight line. If two of them are 40' and 75', what is the third angle(X)
40+75=115. 180-115=65
The population of a town went from 8000 to 9500 in 2 years. What was the percent change?
18.75%
A person 1/2 mile in every hour 1/4 hour what is the unit rate in miles per hour
2
On a graph showing a proportional relationship, what does the point(1,8) represent?
The unit rate(constant of proportionally)
Emily borrowed 600. After 3 years, she repaid the loan plus $108 in simple interest. What was the annual interest rate
6%
Find the value of x ina linear pair where the angles are 3x and 60'.
3x+60=180 3x=120 x=40