It is never helpful to rewrite an equation in standard form as a first step in solving it

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

How can you find the mean absolute deviation (mad) for this set of data?