I only need help with the expression part

Hey!

For each question:

a. 60° F (subtract 80 by 20, fell = take away.)

b. -4° F (add 9 to -13, adding a negative number makes it smaller until 0.)

c. -13° F (subtract, subtracting from a negative number makes the number larger, due to more being taken away.)

where does the z at is it on the x axes or on the y axes any way if it is on the y axes put it horizontally and if it is on the x axes put it vertically

step-by-step explanation:

at each of the parallel lines adjacent angles are supplementary. the angles have special names identifying their positions with respect to the parallel lines and transversal. they are corresponding angles, alternate interior angles, or alternate exterior angles. an angles is congruent to its matched angle.