How can you tell when a pattern shows counting on by tens?

Find the slope of a line given the following two points

15/16 as a decimal rounded to the nearest hundredth

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.