The circumference of a circle is
feet. what is the length of the radius of this circle?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?