Francis heard that a car stereo system was on sale for 30% off. If the sale price was $57.75, what was the original price of the stereo? (if someone could answer this before Sunday that would be nice!)

Use continuity to evaluate the limit. lim x→16 20 + x 20 + x step 1 consider the intervals for which the numerator and the denominator are continuous. the numerator 20 + x is continuous on the interval the denominator 20 + x is continuous and nonzero on the interval

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7