A total of 15 campers go canoeing. Each canoe holds up to 3 people. Which equation can be used to find the fewest number of canoes, c, the campers use?

True or false look at the picture pls : /

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?