If two circles are concentric then their radii are congruent?

Find percent notation for 0.008 0.008=

For which pair of functions is (gof)(a)=|a|-2?

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny