A mom buys her kids 3 cartons of milk for $1.25 each and 6 donuts. The total cost was $6.90. Write an equation to determine the cost of a donut

If g(x) is an odd function, which function must be an even function?

In which form is the following function written? y = - 2(x – 3)(x + 5)

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?