Evaluate the expression when r = 3, y= -4, and z = -6. -2=

What is the value with a place of tenths in 907.456 1) 0 2) 6 3) 4 4) 5

Read the equations in the table below. then drag a description of the situation and a table to represent each equation. indicate whether each of the relationships is proportional or non-proportional.

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document