Question

I am trying to do Direct Linear Variations and i am not sure how. can someone help me with like 5 questions?
1: The number of calories burned, c, varies directly with the time spent exercising, t. When Lila bikes for 3 hours, she burns 900 calories.

Which of the following equations shows this direct linear variation?

A.
c = 300t

B.
c = 3t

C.
c = 900t

D.
c = t
i think A or C
2: Amelia paid $252 for 28 cases of granola bars for the snack bar. The total cost varies directly with the number of cases purchased.

How much will she pay for 10 cases of granola bars

Answer 1

Welcome to open study how are you

Answer 2

okay you ready

Answer 3

3: A customer paid $4.50 for 6 photo prints. The cost for prints varies directly with the number of prints made.

How much will the customer pay for 15 prints?
4: A horse runs for 0.25 h and travels 9 mi. The horse’s distance varies directly with the amount of time it runs.

How many miles will it run in 1.5 h?
5: A wheel rotates on an axle 84 times in 6 min. The number of rotations varies directly with the time the wheel rotates.

How long will it take the wheel to rotate 168 times?

Answer 4

im ready lol

Answer 5

thats Let y be the number of rotations
Let x be the time in minutes

84 = 6k
y = k x ( y varies directly with x)
84 = 6k
k = 14

y = 14 x

168 = 14 x
when y=168 , x = ?
x = 12 minutes
number 5 thats

Answer 6

@lillieJULE

Answer 7

okay that makes alot more sense than what they tried teaching me

Answer 8

OK

Answer 9

REDY FOR NUMBER 4 AND 3

Answer 10

0.5 hrs=18 miles so 1 hr=36 miles, 36+18=? that 4

Answer 11

@lillieJULE got it

Answer 12

yep

Answer 13

Well you would divide 4.50 ÷ 6 so .75
then .75 x 15. So 11.25 thats number 3

Answer 14

thats the last one

Answer 15

@lillieJULE that last one

Answer 16

wat about 2 and 1?

Answer 17

@Prettygirl_shynice

Answer 18

yea

Answer 19

im don't see 2 and 1 only 5, 4, 3

Answer 20

okay im doiung em

Answer 21

kk thanks

Answer 22

5.the answer is B. C= 300t. I just had a math question like this yesterday. :)
C= 300 * 3 = 900.

Answer 23

1.the answer is B. C= 300t. I just had a math question like this yesterday. :)
C= 300 * 3 = 900.

Answer 24

lol k

Answer 25

2.This question requires you find the total cost per case
28x=252
divide 28 from each side
x=9
Multiply 9 by 10 to get your answer of $90

Answer 26

ok

Answer 27

thnx

Answer 28

your welocme tell me what your scrose is

Answer 29

ment tell me what your score is

Answer 30

@lillieJULE