The function f (x) represents the total cost for x tickets for a carnival, including the entry fee.

f (x) = 0.50x+4

What is the value of f (20), and what does it mean in the context of the situation?

A.

f (20) = 32; this means that it costs $20 to purchase 32 tickets and pay the entry fee.

B.

f (20) = 14; this means that it costs $14 to purchase 20 tickets and pay the entry fee.

C.

f (20) = 14; this means that it costs $20 to purchase 14 tickets and pay the entry fee.

D.

f (20) = 32; this means that it costs $32 to purchase 20 tickets and pay the entry fee.

Question

Mathematics

Knucklebutt

25 May, 11:51

The function f (x) represents the total cost for x tickets for a carnival, including the entry fee.

f (x) = 0.50x+4

What is the value of f (20), and what does it mean in the context of the situation?

A.

f (20) = 32; this means that it costs $20 to purchase 32 tickets and pay the entry fee.

B.

f (20) = 14; this means that it costs $14 to purchase 20 tickets and pay the entry fee.

C.

f (20) = 14; this means that it costs $20 to purchase 14 tickets and pay the entry fee.

D.

f (20) = 32; this means that it costs $32 to purchase 20 tickets and pay the entry fee.

+5

Answers (1)

Know the Answer?

Carson · Answer 1

B. f (20) = 14; this means that it costs $14 to purchase 20 tickets and pay the entry fee.

Step-by-step explanation:

To evaluate the function, put 20 where x is, then do the arithmetic.

f (20) = 0.50·20 + 4 = 10 + 4

f (20) = 14

___

To find the interpretation, put 20 where x is in the description of the function:

"The function f (20) represents the total cost for 20 tickets for a carnival, including the entry fee."

The appropriate choice is the one that matches these: choice B.