Step-by-step explanation:
x=width of pool
2x=length of pool
the dimensions of the rectangle forming the walkway and the pool are x+4 and 2x+4
the area of this rectangle minus the area of the pool is 196 square feet
(2x+4)(x+4)-(x)(2x)=196
2x^2+4x+8x+16-2x^2=196
combine similar terms
12x+16=196
12x=196-16
12x=180
x=180/12
x=15 feet is the width of the pool
check: 34*19-30*15=196
646-450=196
196=196
Answer:
4 pounds (lb)
Step-by-step explanation:
$2.68 (spent) ÷ $0.67p/lb = 4 lb
16.22÷2=8.11
8.11*6=48.66
So they would cost $48.66
Hope this helps!