Is -12.2 a rational number

Yes!

Step-by-step explanation:

It does not have a repeatinf decimal

Yes -12.2 is a rational number because integers extend whole numbers such as ...-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6.

y = 35x for expression

350 for the last row part

Step-by-step explanation:

2:70 simplifies to 1:35

With x being the number of tickets (input) and y being the cost (output) you get y = 35x

As for the last row part just plug in the numbers

y = 35(10)

y = 350

My brain went oof on this explanation lol