What is the area of the figure?
fast? !

We have a trapezoid and a triangle

area of trapezoid=(base1+base2) times 1/2height
area of traingle=1/2 base times height

triangle
base=18
height=12
area=1/2 times 12 times 18=108

trapezoid
to find height we do
17=12+height
subtrac 12
5=height

so
base1=14
base2=18
height=5
area=(14+18) times 1/2 times 5
area=32 times 1/2 times 5
area=80

total area=area of trapezoid+area of triangle
total area=80+108
total area=188 mm^2

The linear equation is: y=ax+b