Is -2.2, -1.1, 0.1, 1.3,... an arthmetic sequence

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

What is the factored form of the following expressions? d^2 – 13d + 36

The cost for an uberi is $2.50 plus $2.00 mile. if the total for the uber ride was $32.50, how many miles did the customer travel?