Let ∠1, ∠2, ∠3, and ∠4 have the following relationships. ∠1 and ∠2 are acute vertical angles.
∠3 is a right angle adjacent to ∠2.
∠4 is an acute angle adjacent to both ∠1 and ∠3.

What is the sum of the measure of ∠1 and the measure of ∠4?

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.