Step 1

We are given that students we re-tested on College Algebra, on a monthly basis, after final exam, starting in May.

The average score \((\overline{x})\) for the class is given by the human memory model, \(\overline{x} = 86 - 15\log(t+1)\),

where t is the time in months after the final exam.

We are asked to find the average score 5 months after the final exam.

Step 2

Noe, to find the average score 5 months after the final exam, we substitute t=5 in the formula

\(\overline{x} = 86 - 15\log(t+1)\).

This gives us

\(\overline{x} = 86 - 15\log(5+1)\),

\(\Rightarrow \overline{x} = 86 -11.672\)

\(\Rightarrow \overline{x} = 74.328\)

We are given that students we re-tested on College Algebra, on a monthly basis, after final exam, starting in May.

The average score \((\overline{x})\) for the class is given by the human memory model, \(\overline{x} = 86 - 15\log(t+1)\),

where t is the time in months after the final exam.

We are asked to find the average score 5 months after the final exam.

Step 2

Noe, to find the average score 5 months after the final exam, we substitute t=5 in the formula

\(\overline{x} = 86 - 15\log(t+1)\).

This gives us

\(\overline{x} = 86 - 15\log(5+1)\),

\(\Rightarrow \overline{x} = 86 -11.672\)

\(\Rightarrow \overline{x} = 74.328\)