Area of a rectangle is computed by multiplying its length and its width.
A = L * W
A = (2x+5)(x²-3x+1)
A = 2x(x²) + 2x(-3x) + 2x(1) + 5(x²) + 5(-3x) + 5(1)
A = 2x³ - 6x² + 2x + 5x² - 15x + 5
Group like terms:
A = 2x³ - 6x² + 5x² + 2x - 15x + 5
A = 2x³ - x² - 13x + 5 CHOICE A.
Answer: B
Step-by-step explanation:
Let's work this problem backwards. So, if he has y dollars left after spending 25% the second time or 3/4 of the money left. So, inverse it to get 
y. Then, do the same for 20% or 4/5, then 4/3y * 5/4 = 5/3y
Answer:
x = 25
Step-by-step explanation:
total interior angles in 360
4x - 20 + 100 = 180
4x = 100
x = 25
