Which statements give the correct constant of proportionality as y = kx?
Choose the correct answers.

1) It takes 5 cans of paint (x) to cover 10 dog houses (y).
y = 2x

2)A lawn service charges $258(y) for mowing 6 yards (x).
y = $43x

3)8 pounds of beef (x) costs $78 (y).
y = $9x

4)Beverly can reads 315 pages (y) in 7 hours (x).
y = 45x

5)10 chocolate bars ( x) contain 3,330 calories (y).
y = 333x

Could answer every question with steps

Se tiene en una caja de canicas 10, 4 blancas y 6 negras ¿cual es la probabilidad que en 2 extracciones con reemplazo sean blancas? ¿cual es la probalidad que en 2 extracciones sin reemplazo sean negras?

Bonnie and bobby are saving money for a vacation. each friend starts with an amount and also saves a specific amount each week. bonnie created a table to show the total she has saved at the end of each week.. weeks 0 1 2 3 4 5 6 7 8 amount saved 12 16 20 24 28 32 36 40 44 bobby came up with the following equation to show the total, y, he has saved at the end of each week, x. y = 12x + 4 compare the rate at which each friend saves money. select the correct answer from the drop-down menu to complete the statement. the rate at which bobby is adding to his savings each week is $ more than the rate at which bonnie is adding to her savings each week.