IF.2 STATE MATH 1 CHECK-IN #1

Let f be the function defined by f(x) = 18 + 2x. What is the value of f(5)?

• 25

• 28

• 43

• 100

Tags

CCSS.Math.Content.HSF-IF.A.2

What value is missing from the function table for f(x)=−0.25x−6?

• −2.25

• −4.25

• −5

• −7

Tags

CCSS.Math.Content.HSF-IF.A.2

Let a ◊ b be defined by a ◊ b = 3a + 2b. What is the value of 5 ◊ 4?

• 14

• 22

• 23

• 45

Tags

CCSS.Math.Content.HSF-IF.A.2

Let x△y ⁢△⁢  be defined by x△y=x−5y. What is the value of  3△(−4)?

• −17

• −6

• 8

• 23

Tags

CCSS.Math.Content.HSF-IF.A.2

The function h(t)=−16t2+75t+80h models the height of a ball as it is thrown into the air, where h is in feet and t is in seconds. What is the height of the ball once 5 seconds have passed?

• 55 feet

• 124 feet

• 375 feet

• 535 feet

Tags

CCSS.Math.Content.HSF-IF.A.2

The distance a car travels at a rate of 65 mph is a function of the time, t, the car travels in hours. Express this function and evaluate it for f(3.5).

• f(t)=65t; 2275miles

• f(t)=65t; 227.5miles

• f(t)=65/t;18.57mile

• f(t)=t/65;0.05miles

Tags

CCSS.Math.Content.HSF-IF.A.2

A club uses the function f(x)=121(1.12)^x to predict the number of members it will have x years after 2010. What is the predicted number of members the club will have in 2020?

• 135

• 376

• 1,167

• 1,355

Tags

CCSS.Math.Content.HSF-IF.A.2

The function f(x)= 3x + 25 models the yearly membership cost for a movie rental club, where x is the number of movies rented.

Last year, Sarah rented 41 movies.

Last year, Tim rented twice the amount of movies as Sarah.

How much more did Tim pay last year than Sarah?

• $41.00

• $61.50

• $123.00

• $148.00

Tags

CCSS.Math.Content.HSF-IF.A.2

Let r⊙s be defined by r⊙s = rs + 6. What is the value of 2 ⊙(–3)?

• 0

• 5

• 6

• 12

Tags

CCSS.Math.Content.HSF-IF.A.2

When given the function f(w)=4w−(w−3i) , what is f(3-2i)?

• 9−3i

• 9−7i

• 9−10i

• 9−13i

Tags

CCSS.Math.Content.HSF-IF.A.2