Given the radius of a circle is 14 cm, what is the exact circumference of the
circle? "pi" = pi symbol *

43.96 cm
14 pi cm
87.92 cm
28 pi cm

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Travis and paula went to lunch. travis ordered a sandwich for $7.50 and paula ordered a burger for $5.25.after lunch, they left a 15% tip for the waiter. how many money did they spend altogether?