What is the value of x? make sure to show all of your work! ( and i'll mark as brainliest.)

It takes jonas 7 1/4 minutes to run the mile. it takes mario 8 5/12 to run the mile. how much faster is jonas than mario? 5/6 minute 1 1/3 minutes 1 1/6 minutes 1 1/2 minutesi will give points and brainlest

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1