Question

A costume designer will buy between 5 and 12 hats for the actors in a play. Each hat costs $7. the function c(h)= 7h models the total amount if money the costume designer spends on h hats.
What is the practical range of the function?
A. all real numbers from 5 to 12, inclusive
B. all real numbers from 35 to 84, inclusive
C. all integers from 5 to 12 inclusive
D. all multiples of 7 between 35 and 84 inclusive

Answer 1

Are there answer choices given?

Answer 2

yes i forgot to put them in the question. 1 sec

Answer 3

take your time

Answer 4

okay the answer choices are posted

Answer 5

Okay what is the difference between real numbers and integers do you know?

Answer 6

um not really

Answer 7

okay
A whole number is just a number itself no dec. and no frac.
A interger is an integer is a number itself that cannot be written as a dec. or frac.
do you see what I see?

Answer 8

They are just the same thing

Answer 9

well..that's kinda confusing lol

Answer 10

Think of it as the same thing because thats what they are the exact same thing

Answer 11

Okay

Answer 12

So what do you know now review

Answer 13

Real numbers and integers are the same thing

Answer 14

Good now take c(h)= 7h and substitute numbers in start at five and go to twelve
c(5)=7(5)=35

Answer 15

so would that be B.?

Answer 16

I believe so but I am not 100% on it sorry

Answer 17

C. The possible hat count is 5, 6, 7, ... 12, ie; there are an integral number of hats to
be purchased.

Answer 18

C(h)=7h
And h=5,6,7,8.........,12
So range=5×7,6×7,...............,12×7
=35,42,.................,84
So all multiple of 7 from 35 to 84 inclusive

Answer 19

So, what's the answer?

Answer 20

D. thank you!!

Answer 21

You are welcome