show all work. Please check accuracy to make sure answers are correct

Ans

Ans.-31.82

8. Students in a College Algebra class were given a final exam in May and

subsequently retested monthly with an equivalent exam. The average

score (R) for the class is given by the human memory model

X-86-15log(t 41)

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

score 5 months after the final exam? Give your answer correct to the

nearest hundreth

Ans.

100 Grupos

2100*420-30

3. How much money should be invested at a rate of 6% compounded

continuously to produce an amount of $20,000 in 15 years?

Ans.

4. A certain population increases according to the model P(t) = 250e0.47

with t = 0 corresponding to 1995. Use the model to determine the

population in the year 2003. Round your answer to the nearest integer

Ans

ER

32381

xa