Please help You want to learn salsa dancing at a fitness center. You have two options; Option A is to pay a $200 registration fee plus $10 per lesson. Option B is to pay $30 for each session you attend.
a) Briefly describe what this problem is about.
b) Write Let statements for the unknowns.
c) How many lessons do you have to attend so it doesn’t matter which option you choose? Show your work.

hi there!

the answer will be d: 2

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

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!