Grade 6 Unlimited Math Practice: Constant Rate

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A factory makes cars at a constant rate. After 7 hours it made 1680 cars. What function relates the number of cars, c, to the number of hours, h?

$c = h + 240$

$h = 240c$

$c = 240h$

$h = c + 240$

Which function relates the number of pies baked, p, with the number of hours, h?

hours	pies baked
36	4
45	5
54	6
63	7

$p=\frac{1}{45}h$

$p=\frac{1}{9}h$

$p=45h$

$p=9h$

Which function relates the number of pages written, p, with the number of hours, h?

hours	pages written
2	16
3	24
4	32
5	40

$h=24p$

$h=8p$

$p=8h$

$p=24h$

A bakery makes muffins at a constant rate. After 8 hours it made 2400 muffins. What function relates the number of muffins, m, to the number of hours, h?

$m = 300h$

$h = 300m$

$h = m + 300$

$m = h + 300$

Which function relates the number of hamburgers cooked, h, with the number of hours, t?

hours	hamburgers cooked
14	7
16	8
18	9
20	10

$h=2t$

$h=16t$

$h=\frac{1}{16}t$

$h=\frac{1}{2}t$