Camila was out at a restaurant for dinner when the bill came. Her dinner came to $32. After adding in a tip, before tax, she paid $40. Find the percent tip.

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Which statement about the relative areas of ? abc and ? xyz is true? the area of ? abc > the area of ? xyz the area of ? abc < the area of ? xyz the area of ? abc = the area of ? xyz more information is needed to compare.

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.