9-4k+8b b=4 k=4 help needed on this one

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?