The time is took Tayna to complete different sets of math problems varied directly with the number of problems in the set Tayna's data is shown in the table. If x = time, and y = the number of problems in the set, which equation models Tayna's direct variation A. y = 12x
B. y = 1.2x
C. y = x divided by 12
D. y = x divided by 1.2

C

Step-by-step explanation:

time is directly proportional to the number of problems in the set

=> x = ky

k = constant of proportionality

when k = 12

x = 12y

by making y the subject, we divide both sides by 12

=> y = x/12

10000

step-by-step explanation: divide by 2,

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

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