#3.3 Function Notation

Evaluate  $f\left(x\right)=2x+5$   when  $x=-3$  

•  $-1$  

•  $-11$  

•  $-4$  

•  $-30$  

Tags

CCSS.HSF.IF.A.2

Evaluate  $g\left(x\right)=-x+1$  

when  $x=-2$  

•  $4$  

•  $-1$  

•  $3$  

•  $-2$  

Tags

CCSS.HSF.IF.A.2

For $g\left(x\right)=3x+2$  find the value of x 

for which  $g\left(x\right)=14$  

• 4

• 44

• 14

• 24

Tags

CCSS.HSF.IF.A.2

For  $h\left(x\right)=\frac{2}{3}x-5$  find the value of x 

for which  $h\left(x\right)=-7$  

•  $-9.7$  

•  $-3$  

•  $-1$  

•  $-\frac{3}{2}$  

Tags

CCSS.HSF.IF.A.2

Let f(x) be the temperature outside x hours after 8:00 AM. What is the meaning of

  $f\left(3\right)=50$  ?

• At 3:00 PM it will be 50 degrees outside.

• At 11:00 AM it will be 50 degrees outside.

• The temperature at 3:00 AM and  11:00 AM is the same.

• 50 hours after 8:00 AM the temperature will be 3 degrees.

Tags

CCSS.HSF.LE.B.5

Let f(x) be the temperature outside x hours after 8:00 AM. What is the meaning of

  $f\left(3\right)=f\left(8\right)$  ?

• At 3:00 PM it will be 8 degrees outside.

• At 11:00 AM it will be 8 degrees warmer out than at 8:00 AM

• The temperature is the same at 3:00 AM and 8:00 AM

• The temperature is the same at 11:00 AM and 4:00 PM

Tags

CCSS.HSF.IF.B.4

Complete the table of values for the function  $f\left(x\right)=2x+5$  

• 9, 7, 5, 3,1

• 1, 3, 5, 7, 9

• 0, 1, 2, 3, 4

• -9, -7, 1, 3, 5

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

The function

  $C\left(x\right)=10x+50$  

represents the cost in dollars to hire a landscaper where x is the number of hours of labor.  How much will an 8 hour job cost?

• $130

• $80

• $42

• #225

Tags

CCSS.HSF.LE.B.5

The function
 $C\left(x\right)=17.5x-10$  
represents the cost in dollars to buy x tickets to a show with a $10 off coupon.  How many tickets can you buy with $130?

• 10

• 8

• 6

• 12

Tags

CCSS.HSF.LE.B.5

How would you write $y=2x+5$  in function notation?

•  $f\left(x\right)=2x+5$  

•  $f\left(x\right)$  

•  $f\left(x\right)=2x$  

•  $f\left(xy\right)=2x+5$  

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2