Kevin is an expert pastry chef. he can bake and decorate an entire cake in 30 minutes. he can also bake and frost a cupcake in 10 minutes. if he works for 12 hours on these two tasks and ends up making a total of 3 cakes, how many cupcakes did he make?

If square root x = -7, then x= -49 true or false

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.

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.