Which of the following is a polynomial? (Α)
xz
12y - 1
1
B
x3
С
x-1
D
x3 + xy - 1

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.