Grade 6 Unlimited Math Practice: Constant Rate

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Which function relates the number of cars produced, c, with the number of hours, h?

hours	cars produced
5	10
6	12
7	14
8	16

$h=12c$

$h=2c$

$c=2h$

$c=12h$

A bakery makes muffins at a constant rate. After 6 hours it made 3480 muffins. Which table correctly shows the number of things made over the first 4 hours?

hoursmuffins5801116021740323204

hoursmuffins8701174022610334804

hoursmuffins1580211603174042320

A factory makes desks at a constant rate. After 5 hours it made 4000 desks. What function relates the number of desks, d, to the number of hours, h?

$h = d + 800$

$d = h + 800$

$d = 800h$

$h = 800d$

A factory makes computers at a constant rate. After 6 hours it made 5640 computers. What function relates the number of computers, c, to the number of hours, h?

$h = c + 940$

$h = 940c$

$c = 940h$

$c = h + 940$

A factory makes tablets at a constant rate. After 7 hours it made 2520 tablets. Which table correctly shows the number of things made over the first 4 hours?

hours	tablets
630	1
1260	2
1890	3
2520	4

hours	tablets
1	360
2	720
3	1080
4	1440

hours	tablets
360	1
720	2
1080	3
1440	4

hours	tablets
1	360
2	720
3	1080
4	1440