Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

Looking for something else?

Not the answer you are looking for? Search for more explanations.

- egracer

Sandi tracks her calories burned during water aerobics class. The number of calories she burns is expressed by the function c(t) = 350t, where t is the number of hours spent doing water aerobics.
To burn more calories, Sandi wears ankle weights during her class. The number of calories she burns while wearing ankle weights is expressed by the function b(c) = 1.2c, where c is the number of calories burned doing water aerobics without weights.
Which of the following composite functions expresses the calories, as a function of time, Sandi burns while doing water aerobics with ankle weights?

Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this

and **thousands** of other questions.

Get your **free** account and access **expert** answers to this and **thousands** of other questions

- egracer

- katieb

See more answers at brainly.com

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this

and **thousands** of other questions

- egracer

the options are
b[c(t)] = 351.2t
b[c(t)] = 420t
c[b(t)] = 351.2t
c[b(t)] = 420t

- egracer

Open study kind of sucks nobody ever helps me..

- egracer

Is it C????? thats what i got through by calculations

Looking for something else?

Not the answer you are looking for? Search for more explanations.

- egracer

- Vocaloid

first find b(t)
if b(c) = 1.2c, then what is b(t)?

- egracer

b(t)=351.2 @Vocaloid

- Vocaloid

uh, not quite
all we're doing is replacing "c" with "t"
so, if b(c) is 1.2c, then what is b(t)?

- Vocaloid

hint: all you need to do is replace "c" with "t"

- egracer

1.2t??

- Vocaloid

right
now, we have b(t) = 1.2t
now we need to find c(b(t))
if c(t) = 350t, then what is c(b(t))?
hint: replace "t" with "1.2t"

- egracer

350c(1.2t)

- egracer

im not really sure I'm a little confused

- Vocaloid

c(t) = 350t
c(b(t)) = c(1.2t) = ?

- egracer

350(1.2)?

- Vocaloid

almost...
if c(t) is 350 times t, then c(1.2t) is 350 times ____
fill in the blank

- egracer

that is so confusing could you break it down some more its really confusign me

- Vocaloid

c(t) = 350*t
c(1.2t) = 350*___
fill in the blank

- egracer

350 times 1.2 thats all i can think of

- Vocaloid

almost, you're missing something important

- egracer

the t?

- Vocaloid

yes!

- egracer

so its 350*1.2t

- Vocaloid

yeah, and what do you get when you multiply?

- egracer

420t

- egracer

so would it be D?

- Vocaloid

ah, it should be B, my mistake
b(c(t)) = 420t

- egracer

thank you so much

- egracer

EVERYONE B WAS CORRECT.

Looking for something else?

Not the answer you are looking for? Search for more explanations.