Question

Ms. Rangel is going to be grading 3V's. It takes her 5 minutes to get everything together to start grading the 3V's, and she can grade one every three minutes. if she has 75 3V's to grade, how much time will she spend greeting 3v's? create a function to find out how much time she will be spending as a function, f(t) of the number of tests graded, t.

Answer 1

It is given Ms Rangel takes 3 minutes to grade one

and the time taken to get everything for grading is 5 minute.

The number of 3V's is 75.

as Ms Rangel takes 3 minutes to grade one, so she the time taken by her to grade 75 3V's is

$75\times3\min =225\text{ min}$

and the total time taken by her to complete the work is

$225\min +5\min \text{ = 230 min}$

because she took 5 minutes for preparations.

so we can write this in the form of function f(t).

where t is the number of tests.

$\begin{gathered} f(t)=3\times t+5 \\ f(t)=3t+5 \end{gathered}$

so this is the function we get.