If you mean for the last one:
Triangle area=1/2bh
=1/2(4)(3x-5y)
Area of rectangle=l•w
=8(6x-y)
So combing them you get:
[(1/2)(4)(3x-5)]+[8(6x-y)]
Simplify: [8(3x+5)]+48x-8y
=24x+40+48x-8y
=72x-8y+40
You'd have to be given x and y to find a true value
Its D because its a one-to-many relation ( note 2 maps to 3 and also maps to 5), o0maps to -1 and also to 4 and 6)
10x40= 400 added on to the double of 6 which is 12x10 for the pay, so i do believe the answer is $520
