3. Factorize showing the common factor
a) 5x - 10x^2
b) 2x + x^2
c) xy + xz
d) 9y^2+3y
e) 81ax - 54a
f) 16y^2 + 64y
g) 15x^2 - 10x
h) 20 xy + 15x^2y
i) 21x + 28y
j) 2x +2y +2z
k) 3ax - 6ay + 15az
l)-az-bz+c2​

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?