What is the product of −2 1/4 and 2 1/2?

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.

If a is a nonzero real number then the reciprocal of a is

4. a single woman uses an online cash flow calculator which reveals a cash flow of 203. what does this mean?