Which does not show a direct variation between x and y?

a. y=4/x
b. y=0.5x
c. y=7x
d. y=x/9

The bake stars picked 907 apples last weekend at a local orchard they made caramel apples and sold them in the bakery in trays of 6

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers