CCSS.Math.Content.HSA.CED.A.1

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x
• y=30(5000)^x
• y=5000(1.3)^x
• y=5000x^x

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CCSS.Math.Content.HSA.CED.A.1

Carlos is working at the grocery store at $10.50 an hour to earn money for tuition. So far he has saved $450. Tuition is due soon and will cost at least $980. Let x be the number of hours that Carlos spends working. Write an inequality that could be used to find x. 

• 10.5x-980<450
• 10.5x+980>450
• 10.5x+450>980
• 10.5x-450>980

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CCSS.Math.Content.HSA.CED.A.1

An adult takes 800 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%. How much ibuprofen is left after 6 hours? 

• 101
• 102
• 103
• 104

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CCSS.Math.Content.HSA.CED.A.1

Five less than  x 

• x - 5 
• 5 - x 
• x + 5 
• 5x

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CCSS.Math.Content.HSA.CED.A.1

Four times a number, increased by 6 is greater than 22.  Which inequality models this scenario?

• 4x - 6 > 22
• 4x + 6 < 22
• 4x + 6 ≥ 22
• 4x + 6 > 22

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CCSS.Math.Content.HSA.CED.A.1

John worked 47.25 hours this week. He gets paid $10.42 per hour for the first 40 hours and then gets time-and-a-half for the rest of the time. How many hours overtime did he work this week? 

• none
• 7.25
• 47.25
• 17.25

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CCSS.Math.Content.HSA.CED.A.1

Principal: $5000
Interest Rate: 3.75%
Time: 25 years
Compounded Monthly
State the future account balance.

• $12712.31
• $12,749.30
• $12,657.59
• $12550.84

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CCSS.Math.Content.HSA.CED.A.1

3x² - 1 = 14

• 5
• -√5
• -√5, √5
• √5

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CCSS.Math.Content.HSA.CED.A.1

-p − 4p > -10

• p > -2
• p > 2
• p < -2
• p < 2

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CCSS.Math.Content.HSA.CED.A.1

Angle 1 = 3x - 4
Angle 3 = 5x - 38
Find the measure of Angle 4

• 17^o
• 47^o
• 133^o
• 55^o

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CCSS.Math.Content.HSA.CED.A.1