John contributed $3,000 to his roth ira last year. this year, he contributed $1,000 to his roth ira. what was the percent decrease to the nearest percent?

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

6cm10 cma conical paper cup has dimensions as shown in the diagram. how much water can the cup hold when full?