These are called integer numbers.
We start with natural numbers (or whole numbers), i.e. the set

When you add the opposite of each whole number, you have the set of integers:

out of 50 bucks Eliza has already used 40.
she has 10 dollars to pay for 5 quarter of an hour
very quarter of an hour takes 4 dollars. Eliza needs 10 more bucks. Eliza does not have enough money.
In an equation 4$ = 15 Minutes. So Eliza should return the bike at 7:30.
Answer:
9/10 x 4/5 = 36/50 simplified = 18/25 is your area
Answer:

Step-by-step explanation:
x2+1/4x4
2x+(1/4*4x)
2x+(1/16x)
= 32x^2+1/16x
Answer: A I think and sorry if I got it wrong