7. The Smith's are hiring painters, and the painting companies they've narrowed it down
to charge based on the number of square
feet. Company A charges $2.25 per square
foot. Company B's rates are shown in the
table below:
SQUARE FEET TOTAL COST
1200
$3,300
1400
$3,850
1600
$4,400
1800
$4,950
2000
$5,500
Which company would give their family the
lowest cost per square foot?

29.5977692753

step-by-step explanation:

i need points

step-by-step explanation:

sorry bubs

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct