CCSS.Math.Content.HSF.BF.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

Tags

CCSS.Math.Content.HSF.BF.A.1

The value of y varies directly with x.  Which function represents the relationship between x and y if y = 14 when x = 6. 

• y=20x
• y=84x
• y=7/3x
• y=3/7x

Tags

CCSS.Math.Content.HSF.BF.A.1

What does 'b" represent in y=mx=b

• y-intercept
• macaroni
• nothing
• slope

Tags

CCSS.Math.Content.HSF.BF.A.1

y varies inversely as x, if y = -3 when x = -6, find y when x = 14.

• 11
• -11
• 9/7
• 7/9

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CCSS.Math.Content.HSF.BF.A.1

Find the equation for the graph shown below

• y = Ix + 2I - 1
• y = -Ix + 2I - 1
• y = -Ix - 2I - 1
• y = -Ix + 1I - 2

Tags

CCSS.Math.Content.HSF.BF.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

Tags

CCSS.Math.Content.HSF.BF.A.1

What does 'b" represent in y = mx+b

• y-intercept
• rise
• x-intercept
• slope

Tags

CCSS.Math.Content.HSF.BF.A.1

A particular type of cell triples in number every hour. Which function can be used to find the number of cells present at the end of h hours if there are initially 6 of these cells?

• f(h) = 3(6)^h

• f(h) = 6x^h

• f(h) = 6(3)^h

• f(h) = 3(6h)

Tags

CCSS.Math.Content.HSF.BF.A.1

The note middle C on a piano is tuned so that the string vibrates at 262 Hertz. Tuning the notes is determined by equation 262 ⋅ (2^n/12), where n takes the values of 1 through 11. Find the tuning, rounded to the nearest Hertz, for notes 2 and 4. Select all.

• 278

• 294

• 330

• 371

Tags

CCSS.Math.Content.HSF.BF.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(1 - 0.30)^x

• y=30(5000)^x

• y=5000(1 + 0.30)^x

• y=5000x^x

Tags

CCSS.Math.Content.HSF.BF.A.1