The expression 2a+1.5b 2a+1.5b   gives the cost (in dollars) for a a cupcakes and b b cookies at a bake sale

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?

Will give brainliest for correct answer 8. use the distance time graph to answer these questions: a. what does the graph tell us about the velocity of the car? b. what is the average velocity of the car? (show work) c. is the velocity reflected in the graph positive or negative?d. is there any point on the graph where the car is not moving? how do we know?

Factor this polynomial completely. 12x^2+ x-6