Enter a simplified expression to represent the situation. A square swimming pool is surrounded by a cement walkway with a uniform width. The swimming pool has a side length of (x − 6) feet. The side length of the entire square area including the pool and the walkway is (x + 4) feet.

Enter an expression for the area of the walkway. Then find the area of the cement walkway when x = 9 feet.

The area of the walkway is ft2.

When x = 9 feet, the area of the cement walkway is
ft2.

step-by-step explanation:

1/800 is the right answer

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752