Step-by-step explanation: For the first question, you have to make a fraction IN-ORDER by putting the 5 on top and adding, because that's what it asked for. For the second question, you have to do it in-order and reduce it. Glad I can help.
Polynomials can have double roots, in fact they're pretty common. if you get a reasonable zero it costs very little time to try it again for a double root. answer is the second choice
A 25% discount means u paid 75% 75% of the original price is 18... 0.75x = 18.....with x being the original price x = 18 / 0.75 x = 24 <== the original price
