9514 1404 393
Answer:
x^2 +4x -21
Step-by-step explanation:
Substitute the given expressions and simplify.
f(x) + g(x)
= (x^2 +3x -28) +(x +7)
= x^2 +(3+1)x +(-28 +7)
= x^2 +4x -21
Answer:
69
Step-by-step explanation:
term = 159 - 3n
The perimeter of a square :
P = 4a (a being the side)
= 4(8)
= 32 in.
The length and width of the rectangle are: 
<h3>What is the area of the rectangle?</h3>
The area of the rectangle is the product of the length and width of a given rectangle.
The area of the rectangle = length × Width
The area of a rectangle is represented by the expression
.
The area of the rectangle = 
= 
So, the length and width of the rectangle are: 
Learn more about the area;
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Answer:

Step-by-step explanation:
Cost at the rate 6 for $15.24:
Cost of
bottles
Cost of
bottle
Cost of
bottles
Cost at the rate 4 for $11.16:
Cost of
bottles
Cost of
bottle
Cost of
bottles
Hence
is less expensive.
Total saving