The richter scale measures the magnitude r of an
earthquake. it is defined by the formula
r = 0.67 log(0.37e) + 1.46
where e is the energy, in kilowatt-hours, released
by the quaker the 1933 quake in japan measured
8.9 on the scale. in scientific notation with
3 significant digits, how much energy was
released?

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

In need of which of the following regression equations best fits the data shown below? explain reasoning (answers are in the picture below)

The radius of a 10 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.1 inch. what is the resulting possible error in the volume of the cylinder? include units in your answer.