Lessons 2.8-2.9 HW quiz

Priya is buying raisins and almonds to make trail mix. Almonds cost $5.20 per pound and raisins cost $2.75 per pound. Priya spent $11.70 buying almonds and raisins. The relationship between pounds of almonds a, pounds of raisins r, and the total cost is represented by the equation .
 $5.20a+2.75r=11.70$  
How many pounds of raisins did Priya buy if she bought the 1.06 pounds of almonds?

• about 0.47 pounds of raisins

• 2.25 pounds of raisins

• about 3.04 pounds of raisins pounds of raisins

•  $\frac{11.70-5.20a}{2.75}$  pounds of raisins

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.CED.A.4

CCSS.HSA.SSE.A.1

 $2x+4y-31=123$  

Here is a linear equation in two variables. Solve for x

•  $x=77-2y$  

•  $x=123-31$  

•  $x=123+31-4y$  

Tags

CCSS.6.EE.C.9

A car traveled 180 miles at a constant rate.

Write an equation that would make it easy to find the rate at which the car was traveling in miles per hour r, if it traveled for t hours

•  $r=\frac{180}{t}$  

•  $r=180-t$  

•  $rt\ =180$  

Tags

CCSS.6.EE.C.9

Bananas cost $0.50 each, and apples cost $1.00 each.

Select all the combinations of bananas and apples that Elena could buy for exactly $3.50.

• 3 bananas and 2 apples

• 1 banana and 3 apples

• 5 bananas and 1 apple

• 3 bananas and 3 apples

• 4 bananas and 2 apples

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.CED.A.3

CCSS.HSA.REI.C.6

To grow properly, each tomato plant needs 1.5 square feet of soil and each broccoli plant needs 2.25 square feet of soil. The graph shows the different combinations of broccoli and tomato plants in an 18 square foot plot of soil.

What statement can describe point A?

• The soil is fully used when 6 tomato plants and 4 broccoli plants are planted.

• Only broccoli was planted, but the plot is fully used and all plants can grow properly.

• After 3 tomato plants and 2 broccoli plants were planted, there is still extra space in the plot.

• With 4 tomato plants and 6 broccoli plants planted, the plot is overcrowded.

Tags

CCSS.8.EE.B.5

To grow properly, each tomato plant needs 1.5 square feet of soil and each broccoli plant needs 2.25 square feet of soil. The graph shows the different combinations of broccoli and tomato plants in an 18 square foot plot of soil.

What statement can describe point B?

• The soil is fully used when 6 tomato plants and 4 broccoli plants are planted.

• Only broccoli was planted, but the plot is fully used and all plants can grow properly.

• After 3 tomato plants and 2 broccoli plants were planted, there is still extra space in the plot.

• With 4 tomato plants and 6 broccoli plants planted, the plot is overcrowded.

Tags

CCSS.8.EE.B.5

 Elena says that equations A and B are not equivalent.

Equation A:   $13-5x=48$ 
Equation B:   $5x=35$  
What can be done to equation A to get equation B?

• subtract 13 from both sides

• divide both sides by 13

• Add 13 to both sides

• subtract 13 from the right side, add 13 to the left side

Tags

CCSS.8.EE.C.7A

To grow properly, each tomato plant needs 1.5 square feet of soil and each broccoli plant needs 2.25 square feet of soil. The graph shows the different combinations of broccoli and tomato plants in an 18 square foot plot of soil.

What statement can describe point D?

• The soil is fully used when 6 tomato plants and 4 broccoli plants are planted.

• Only broccoli was planted, but the plot is fully used and all plants can grow properly.

• After 3 tomato plants and 2 broccoli plants were planted, there is still extra space in the plot.

• With 4 tomato plants and 6 broccoli plants planted, the plot is overcrowded.

Tags

CCSS.8.EE.B.5

A car has a 16-gallon fuel tank. When driven on a highway, it has a gas mileage of 30 miles per gallon. After filling the gas tank, the driver got on a highway and drove for a while.

How many miles has the car traveled if it has 15 gallons of gas left in the tank?

• 30

• 180

• 90

• 10

Tags

CCSS.6.EE.B.7

The area A of a rectangle is represented by the formula A-lw, where l  is the length and w is the width. The length of the rectangle is 5.
Select all equations that makes it easy to find the width of the rectangle if we know the area and the length.

•  $w=\frac{A}{l}$  

•  $w=\frac{A}{5}$  

•  $w=A\cdot l$  

•  $w=\frac{5}{l}$  

Tags

CCSS.HSA.CED.A.4