42 less than the product of 28 and an unknown number is 154.

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

15 there is a line that includes the point 0,10 and has a slope of 7/4. what is it’s equation in slope intercept form

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?