Mariana is 10 years old and has grown 7 inches in 2 years. When she was 8 years old, she was 52 inches tall and began recording her height. Mariana writes and graphs a function that models her height in inches over time in years. What is the initial value for this function?

A, 59
B. 3.5
C. 7
D. 52

I think that the answer choice is B (or 3.5)

Question

Mariana is 10 years old and has grown 7 inches in 2 years. When she was 8 years old, she was 52 inches tall and began recording her height. Mariana writes and graphs a function that models her height in inches over time in years. What is the initial value for this function?

A, 59
B. 3.5
C. 7
D. 52

I think that the answer choice is B (or 3.5)

mehek14 · Answer

I believe you are correct because
when she was 8, she was 52 inches
when she is 10, she is 59
$\dfrac{59-52}{10-8}=\dfrac{7}{2}=3$

calculusxy · Answer

You mean $$\large \frac{ 7 }{ 2 } = 3.5$$ ?

mehek14 · Answer

oh ye my bad

calculusxy · Answer

Ok thank you for your help!

mehek14 · Answer

$\dfrac{59-52}{10-8}=\dfrac{7}{2}=3.5$

mehek14 · Answer

yw

mathmale · Answer

What does 3.5 represent?  Please use units of measurement as well as numbers.

mathmale · Answer

I'd suggest re-reading the original question.  What result does it ask for?   Is 3.5 that result?