Answer:
Yes, all your answers are correct.
They are correctly matched with their reasons.

Multiply 50 by 0.90 because you take a discount of 10% off. 1.00 = 100% 0.10 = 10% 0.01 = 1% if you multiply 50 by 0.10 instead you get the amount that is discounted instead of the new selling price.
Answer:
When variables are next to a number or another variable it means multiply
Product means multiply
16 x p is what the sentence means in an equation and 16p is equal to 16 x p so B. is correct
Step-by-step explanation:
Answer: im sorry im not sure but you can find the answer if you look it up
Step-by-step explanation:
Answer:
x/x+3
Step-by-step explanation:
first off, we start by factorizing.
we start with the numerator taking x out making it x (x-3) / x^2 - 9
then we factorize the denominator a bit more...making it x (x-3) / (x-3) (x+3)
as you can tell there is a (x-3) on both sides. so we can cross them out.
x/x+3 is left. try it yourself again so you can understand other questions like this! I hope I could help!