Please hurry 3. If the length of a rectangle in terms of x is 3x2 + 7x + 9, and its width is 3x + 6, what is the perimeter of this
rectangle? Don't leave any spaces in your solution.
Perimeter: units
a. 4(3x2+20x+15)
b. 2(3x2+10x+15)
c. 3(3x2+10x+15)
d. 2(3x2+10x+30)

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step-by-step explanation:

total of apples - take away four

6-4 = 2

answer is 2 apples

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.