6, 2, -2, -6, ... n is an integer, which of these functions generate the sequence?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.