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3 years ago

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All of the girls are Danielle's cabin at camp are the same age. Their counselor is 3 times their age. Danielle's age and her cou

nselor's ages at up to 28. Write an equation that can be used to find the ages of Danielle and her counselor.

1 answer:

FromTheMoon [43]3 years ago

8 0

Answer:

see the explanation

Step-by-step explanation:

Let

D -----> Danielle's age

C -----> Counselor's age

we know that

$C=3D$ ----> equation A

$D+C=28$ ----> equation B

substitute

equation A in equation B

$D+3D=28$ ----> equation that can be used to find Danielle's age

Solve for D

$4D=28$

$D=7$

<em>Find the value of C</em>

$C=3D$ ----> equation that can be used to find Counselor's age

substitute the value of D

$C=3(7)=21$

therefore

Danielle's age is 7 and Counselor's age is 21

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Step 3: Evaluate the function at the left endpoints

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