Deirdre doubled her savings account balance of $100. Then she withdrew $30 to buy some new clothes. Represent this situation with a numerical expression.

A frog is sitting on a stump 4 feet high hops off and lands on the ground. During its leap, the frog's height H in feet is given by the equation h=-.5d^2+d+4 where d is the horizontal distance in feet from the base of the stump.

The diameter of a circle is 14 meters. What is the area? d=14 m

At the average cost of $.562 per mile, find the cost to travel 420 miles.

A professor wished to study whether the percentage of Americans that graduate from college has increased. Ten years, ago, 25% of Americans graduated from college. This year, a random sample had a college graduation rate of 28%.

A bag contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the bag, if at least one black ball is to be included in the draw?

Express the solution set of the equation in set notation. x - 2 = 10

What is 520% written as a fraction

What is the product of gcf and another sum of 48+14

18/30 reduce into fraction

A research article reports the results of a new drug test. The drug is to be used to decrease vision loss in people with Macular Degeneration. The article gives a p-value of. 04 in the analysis section.