Randy wants to run a half marathon next weekend. A half marathon is 13.1 miles. b) At the 10-mile mark, Randy realizes that her total running time is 90 minutes. Has Randy been keeping the pace (rate) that she intended? Explain your answer.

When x = 3 and y = 5, by how much does the value of 3x2 – 2y exceed the value of 2x2 – 3y ?

Cherie works in retail and her weekly salary includes commission for the amount she sells. the equation s=400+0.15c models the relation between her weekly salary, s, in dollars and the amount of her sales, c, in dollars. interpret the slope of the equation.

What is the domain of the step function f(x)=[2x]-1?