The cost to manufacture a hair clip i $0.50 with a markup of 200 percent what is the selling price of this hair clip

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

How do i take any fraction and make it into a decimal or percentage?