Mary ran a 5 kilometer race in 45 minutes. Melanie ran the 2 kilometer race in 17 minutes. Which runner ran the faster race? What was that rate per hour?

You have 6 dollars +12 pennies +to quarters + 4 dimes=2 nickels how much do you have

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).