What is the volume of a triangle with the numbers 9 inches and 10 inches

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

#1-20 state whether the angles are alternate interior, alternate exterior, vertical, or corresponding angles.

What’s the answer ? use the picture to see the problem