Helen rented a kayak at the lake. there is a charge of $8 as an initial fee and then $2 an hour for every hour that she uses the kayak. if the total charge is $20, how many hours did she kayak?

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

step-by-step explanation:

what is the figure? attach a picture.