A boat can go 35 mph in still water. It takes as long to go 60 miles upstream as it does to go downstream 90 miles. How fast is the current? a 3 mph
b 6 mph
c 7 mph
d 1 mph

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is