The senior class sells movie tickets to students and teachers. The student tickets cost $4 each and teacher tickets cost $8 each. If they earned only $44, how many possible combinations of student and teacher tickets could have been sold?

There are 6 possible combinations:

Student | Adult .  $

      11      |     0 .    44 + 0

      9       |     1       36 + 8

      7       |     2       28 + 16

      5       |     3       20 + 24

      3       |      4       12 + 32

       1       |     5        4 +  40

Step-by-step explanation:

We can use an equation  4x + 8y = 44

Graph it and see where the graphed line crosses the grid lines at integers.

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

#12 the answer is the third option