Ethan and Evan are twins. They each deposit $3,000 into separate bank accounts. Their accounts each accrue interest annually as shown in the tables below Ethan’s Account
Year
Balance
0
$3,000
1
$3,240
2
$3,480
3
$3,720

Evan’s Account
Year
Balance
0
$3,000
1
$3,240
2
$3,499.20
3
$3,779.10
Part A
Explain whether each account can best be modeled by a linear or an exponential function. Justify your reasoning.
Part B
How much higher of a balance would Evan have after 5 years than Ethan?

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297