State the domain and range. y=0.25^x

Since x is the exponent of 0.25, it does not have restrictions. Therefore the domain is R. In interval notation that is (-infinity,infinity).

Since x can be any real number, y will only be positive (natural numbers). When x is negative, y < 1 but never 0 since there is no value of x that makes 0.25^x = 0. Also, when x is 0 or positive, y ⩾ 1. Therefore, the range is N (set of positive numbers).

Horizontal change or the change of x

A) for the n row: 22+(n-1)×6therefore,b) 100-22=78that means (n-1)×6=7878÷6=1313+1=1414th row has 100 seats