A cup of coffee cost $2.50. If the total cost is $22.50, then how many cups of coffee were purchased? a. Write an equation

b. What is the constant of proportionality?

Find parametric equations for the line tangent to the curve of intersection of the surfaces at the given point. surfaces: xsquared2plus+2yplus+2zequals=1212 yequals=33 point: left parenthesis 1 comma 3 comma five halves right parenthesis

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?