Please helppppppppppppppppppppp

B

Step-by-step explanation:

the constant rate of change is the number before x in an equation (in ours its -2)

on a table just find where there are two x values that go up by one then see how much the y value goes up (in our case its 4)

hope this helps <3

30.5°

Step-by-step explanation:

Supplementary angles add up to 180°. You know one angle is 149.5°, so you can find the other angle.

Measure of its supplementary angle = 180° - 149.5°

                                                             = 30.5°