Choose which of the following functions has a domain of all real numbers. Select all that apply. f(x) = 2x^2
f(x) = 2/x
f(x) =2x
f(x) = 2^x
f(x) = x/2

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).

step-by-step explanation:

*calories burned = (weight)(calorie factor)*

calories burned = 180 (0.65)

calories burned = 117

the calories he used up is 117, which is 65% of his weight.