Y is partly constant and partly varies as x, and when x=5,y=8, and when x=6, y=4, find the equation connecting y and x,
find y when x=15,
find x when y=20

What is the average diastolic blood pressure for adults

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters