13.5 x 2.4 = 32.4
The length of the road they built is 32.4 km
16(x+2)-8 = 16x+24
16x + 32-8 = 16 x + 24
16x + 24 = 16x + 24
Every x is a solution. How many is that?
An uncountably infinite number of solutions.
For this case we must find an expression equivalent to:

By definition of power properties we have to:

So:

We have by definition of properties of powers that:
Then, rewriting the expression:

Answer:

$4.68 because each pretzel is $1.17 so 8 pretzels are 9.36 ÷ by 2 = $4.68