Please help me :(( J is the midpoint of CT

if:

CJ = 3x+8

and

JT= 6x+5

FIND CT

Which of these choices show a pair of equivalent expressions?

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie