2.2.2 (74-77)

2-74
A) (4x+1)(2x-7)

• 8x² -28x + 2x -7
• 8x² -26x - 7
• 8x - 26x - 7
• -16x - 7

Tags

CCSS.HSA.APR.A.1

2-74 D
(-3x + 1)(2x - 5)

• -6x² -13x - 5
• -6x² - 15x + 2x - 5
• -6x² +15x + 2x -5
• -6x² +17x - 5

Tags

CCSS.HSA.APR.A.1

2-75
Find the shaded area.

• 80 feet²
• 80 - 12 = 68 feet²
• 80 - 12 - 40 = 28 feet²

Tags

CCSS.6.G.A.1

76A

• x=8
• x=10
• x = 5

Tags

CCSS.7.G.B.5

76C

• x=10
• x= 15
• x= 20

Tags

CCSS.8.G.A.5

76D

• x = 90
• x = 45
• x = 60
• x = 15

Tags

CCSS.7.G.B.5

77

• Outside
• Left
• Middle Intersection
• Right

Tags

CCSS.5.G.B.4

77A
After flipping 35 pancakes, only 22 landed correctly on the grill.  What is the probability as a percent that Flo flipped correctly?

• 35/22
• 22/35
• 159%
• 63%

Tags

CCSS.7.SP.C.6

77B
Flo needs 42 pancakes for a large hungry group that just arrived.  How many pancakes should she attempt to flip so that she gets out 42?
Hint: 22/35 = 42/x

• 60 pancakes
• 42 pancakes
• 67 pancakes
• 50 pancakes

Tags

CCSS.7.RP.A.3

77C
Flo made 12 sourdough pancakes and 15 buttermilk pancakes.  How many banana pancakes should Flo add to the pan so the probability of pulling a banana pancake is 1/10?
Hint: x / (x + 12 + 15) = 1/10 

• 1
• 2
• 3
• 4

Tags

CCSS.7.SP.C.7B