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?

c = 900t
c = 300t
c = 3t
c = t

This is about circle theorems. someone asap : (

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?