1. Simplified already
2. 5x^2 x (3x+5)
3. 3x^3 x (3x^4 +11)
Answer:A
Step-by-step explanation:
1) either you'll get a negative number
Or
2) You'll get a positive Number..
But I'm guess you'll get a positive number
A circular pool with a diameter of 18 ft will have a uniform
4 ft concrete walkway poured around it. If the concrete cost $4.25 a square
foot, how much will it cost for the concrete?
This can be solve be solving the area of walkway
Area of walkway is equal to = (pi)( 9 ft +4) ^2– (pi)(9ft)^2
= 276.46 sq ft
Cost = 276.46 sq ft * ($4.25 a square foot) = $1174.70