Which of these questions are unit rates? a.) crystal bought 2 pairs of shoes for $30.
b.) dallas ran 12 km in an hour.
c.) hugh made 17 tables in 4 days.
d.) jorge typed 222 words in 4 minutes.
e.) there were 56 berries in one pie.

Hannah works at the mall selling book bags. she sold 35 book bags in 5 hours. how many book bags did she sell per hour?

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet