lesson 1
A climber descends 3 miles into a canyon. What integer represents the descent of her climb? how far does she have to climb to return to her starting point?
Lesson 1-1
The descent of her climb is represented by -3. She has to climb 3 miles to return to her starting point.
Find Marissa buys 4 books at $13 per book. What integer represents the total change in the amount of money Marissa has?
lesson 1-6
-52
In 3 days a typical Robin can eat up to 42.6 feet of Earthworms. Write a rate to relate to number of feet of earthworms to the number of days. Then find the unit rate.
lesson 2-1 and 2-2
14.2 feet
Find 57% of 690
lesson 3-1
393.3
Yuni loaned $400 to her brother. He will repay the loan by paying 2.5% simple interest for 3 years. How much will he pay in interest?
le
He will pay $30 in interest.
Write the decimal equivalents for 5/8 and 8/11. Are the decimals terminating or repeating?
lesson 1-2
The decimal equivalent for 5/8 is 0.625 which is a terminating decimal. The decimal equivalent for 8/11 is 0.7272... which is a repeating decimal.
Jason spends $2.35 to buy lunch at school. If he buys a lunch in 9 days, what number represents the total change in the amount of money Jason has?
lesson 1-7
$21.15
does the table show a proportional relationship between x and y? Explain.
x 200 400 500
y 600 1,200 1,500
lesson 2-3
Yes they are all proportional.
What percent of 19 is 4.75?
lesson 3-2
25%
A farm charges $1.75 for each pound of strawberries and $2 for a basket to hold the strawberries. What is the total cost to pick 5 pounds of strawberries?
Lesson 4-1
Find the sum of (-28)+(-19).
1-3
-47
Whitney Roosevelt rolls a ball down a ramp that is 18 ft long. If the ball rolls down 2 feet each second what integer represents the amount of time in seconds the ball takes to reach the end of the ramp.
lesson 1-8
9
The table shows the wages Roger earned for the hours he worked. Does the table show a proportional relationship?
time=3, 5 ,6
wages= 27, 45, 54
Lesson 2-4
Yes, 9
Michael earns a 6% Commission on each house he sells. If he sells a house for $180,000 how much does he earn in commission,c?
lesson 3-3
Michael earns $10,800 in commission.
Simplify the expression below
-7+1/3n-4/3+2n
Lesson 4-2 and 4-3
2 1/3n-8 1/3
find -7-(8)
1-5
-15
Solve
-4/3 / 15/24
lesson 1-9
-1 1/5
How do you find the constant of proportionality on a graph?
lesson 2-5
You divide y/x.
Julian's puppy weighed 16 pounds at the age of 2 months. The puppy weighed 60 pounds at the age of 8 months. What is the percent change in the puppies weight?
Lesson 3-4
The change is 2.75
Expand the expression 1/4(h+7)
lesson 4-4
(1/4xh)+(1/4x7)=1/4h
Find -5 1/2- 1 1/2
lesson 1-5
=7 1/4
A 15-day dry spell, the water level and the lake Changed by -2 3/8 inches what rational number represents the average change in the water level per day?
lesson 1-10
-19/120 inch
Sara makes gift baskets that each contain 3 pounds of gourmet cheese with every 2 boxes of crackers. She ordered 80 pounds of cheese and 50 boxes of crackers. How can she adjust her order to make 25 gift baskets, with no leftover items?
lesson 2-6
She can order 5 fewer pounds of cheese.
Bree buys a purse for $90. She sells it at her store for $135. What is the percent markup on the purse?
50%
Factor the expression 12x-9y+15
lesson 4-5
3(4x-3y+5)