Week 3.2 Bellwork

Kelly works at the high school concession stand to help raise money for the math team. What is the least number of coins she needs to make 44 cents in change?

• 5

• 6

• 7

• 8

• 9

For what value of x is the equation 3(x-6) + x = 30 true?

• 24

• 12

• 9

• 6

• 3

On a real number line, point A is at -5.5 and is 7.5 units from point B. What are the possible locations of B on the real number line?

• -13 and 2

• -13 and -2

• -13 and 13

• 13 and -2

• 13 and 2

• -44

• -28

• 28

• 44

• 58

When Michelle defrost frozen hamburger in her microwave, she enters the weight to the nearest 0.1 pound, and the microwave automatically sets the defrost time. She wonders if there is a relationship between the weights and the corresponding microwave defrost times. She graphs 3 weights and their corresponding defrost times on a standard (x,y) coordinate plane and notices a linear relationship. She determines that the line that represents this relationship is y = 420x + 10. How many seconds longer is the microwave's defrost time for 2.4 pounds of hamburger than for 0.9 pounds of frozen hamburger?

• 252

• 388

• 630

• 640

• 1018

• cos A

• csc A

• sec A

• sin A

• tan A

• -24

• -8

• -7

• -3

• 2

• 1

• 2

• 4

• 5

• 8

• 3

• 4

• 6

• 12

Nolan has 20 collectible stamps. He paid $43.75 for each stamp 3 years ago. The stamps are currently valued at $51.85 each. How much more must the average value per stamp rise for the combined value of these 20 stamps to be exactly $300.00 more than Nolan paid for them?

• $15.41

• $14.60

• $10.22

• $8.10

• $6.90