An element with mass 730 grams decays by 28.8% per minute. how much of the element is remaining after 10 minutes, to the nearest 10th of a gram?

Achef will make pizzas. he has broccoli, peppers, onions, pepperoni, and sausage. how many types of vegetable and one type of meat?

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

Richard save $32 in march he saved $48 in april and $38 in may then richard spent $113 on a keyboard how much money does richard have left