Proportional Relationships
A farmer plants 50 rows of corn per acre. How many rows of corn can the farmer plant on 13 acres?
650 rows
What are the formulas for finding the circumference and area of a circle?
circumference: 2pi*r
area: pi*r2
6x = 78
x = 13
-12 + (-40)
-52
On average, how many words are written with a standard #2 pencil before it is all used up?
45,000
Mrs. Chedwick runs 2 1/4 miles every day. How many total miles will she run in three weeks?
47 1/4
6pi
2x + 3 = 15
solve for x
x = 6
3 x (-5) + 5
-10
In miles, what is the radius of the earth?
3,963
y = 138x represents the relationship between the number of pounds of jellybeans (x) and the total number of jellybeans (y).
How many jellybeans are there in 6 pounds?
828
A circle has an area of 49 pi. What is its radius?
7
Simplify the expression:
3(2x -4) + 3x
9x - 12
-72 - 8 + (-20)
-100
On average, how many grains of sand can fit in a (8 oz) cup?
15 million
An otter eats the same amount of clams every day. After the 14th day, it has eaten 378 clams. How many clams does it eat each day?
A rectangular prism is 7 units long, 8 units wide, and 15 units tall. What is its volume?
840
4x - 2 > 34
x > 9
-15 + (-4) x 15 - 45
-120
If our floor were a lawn, how many blades of grass would fit on it?
1.8 million
Mr. Stosic is driving to Seattle (770 miles away), going the same speed the whole time. After 4 hours he is 220 miles away. How long will it take him to get there (rounded to the nearest hour)?
14
A cube has a volume of 125 cubic units. What is its surface area?
150
2(4 -4x) < -88
x > 12
-3(4 - 6) + 5(-3 x 2)
-24
How many days old is Mr. Stosic?
16,259