Sweet t will feed the cat 4 ounces of food each day for 10 days . how many ounces of food will the cat eat in 10 days

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.

What numbers are included in the set of integers? what numbers are not included?

In the diagram, bc¯¯¯¯¯∥de¯¯¯¯¯ . what is ce ? enter your answer in the box.