Sandra worked 6.2 hours on wednesday,5.5 o. thursday and 3.5 hours on friday. which of the following is closest to the mean number of hours she worked over the three day period?
a: 3 hour
b: 4 hour
c: 5 hour
d: 6 hour

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

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

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11