Del grafico, calcula AB

Use the numbers in the multiplication equation 45 x 1/9 =5 to write a division equation involving division by a fraction.

Me find the measure to side c and the process to solve the problem you appreciate 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?