Find the product of all constants t such that the quadratic x^2 + tx - 9 can be factored in the form (x+a)(x+b), where a and b are integers.

Atrucker had a load of grain containing 2 tons. she unloaded 1 ton and 1,200 pounds at the warehouse. how much grain does she still have left on the truck?

How do you solving the solution of each system using elimination?

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.