12. a. check that rx s is indeed a ring. b. check that if r and s are commutative rings, then rxs is a commutative ring. 1. is rx s ever an integral domain?

Micah solves a linear equation and concludes that x = 0 is the solution. his work is shown below. (1 – 3x) = 4(– + 2) 0 = x which statement is true about micah’s solution?

Which compound inequality could be represented by the graph?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.