Leona spent $22.95 at the mall. she bought a t-shirt and a book. the book $12.25. how much did the t-shirt cost? a. write the equation that models the problem. b. solve the equation. c. answer the question.

A) Let x = cost of t-shirt:

x= 22.95-12.25

B) x = 22.95 -12.25 = 10.70

C) the t-shirt cost $10.70

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0