11.
(87+91+86+x)/4=90.
x=96.
13.
50×y > 130.
the lowest number could be 3, because 50×2=120, which is less than 130.
Answer: $4.50
Step-by-step explanation: If it is 50% off then you take the price of $2.25 and double it. So 2 times $2.25 which is $4.50.
Step-by-step explanation:
it so easy bro 5.5 ok bro.
Answer: -1 < x < 1
Step-by-step explanation: Solve for x.
Graph line is down below!
Hope this helps you out! ☺
-Leif-