Mrs. Brady is a dance teacher whose students are going to have a recital. She is comparing two companies' prices for filming the recital and producing DVDs. Lacey's Productions charges $9 per DVD, plus $76 to come and film the recital. Yardley Media charges $84 to film, plus $8 per DVD. To decide which company to use, Mrs. Brady determines the number of DVDs that would make the two options equivalent in terms of cost. How much would each option cost? How many DVDs would that be? The cost would be $ if Mrs. Brady ordered DVDs.

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."