Function domain word problems. 49 points! and you ^-^

The domain is the set of integers since the number of steps can be positive and negative without a partial step (either you take the step or not).

First, let's see what group of numbers each one is:

The real numbers are all numbers including irrationals, decimals, etc.

Integers are numbers that don't have any fractional parts, which means that decimal numbers are not integers.

So, since we work with the number 0,5 and 2,5 (height of the fifth step) I think the answer is A, integers, because you can't go up or down less than one step. You can either go one step, or more. It's impossible to walk 1/2 step.

Hope it helped,

BioTeacher101

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.