Answer: B) [tex]=10\frac{d}{t}[/tex]
Step-by-step explanation:
Given: The number of questions Jennifer can answer on a worksheet is directly proportional to how many minutes she studied.
If she studies t minutes (independent variable) she can answer d questions (dependent variable) then
[tex]d=kt[/tex], where k= proportionality constant
Then, [tex]k=\frac{d}{t}[/tex]
If she studied 10 minutes, the number of question she answered=[tex]10k[/tex]
If we put value of k in it, we get [tex]=10\frac{d}{t}[/tex]
