Suppose varies jointly as and and inversely as and = 2 when = 6, = 5, and = 15: 2. 1. What is the equation of variation? 2. 2. Find when = 3, = 4, and = 6. 2. 3. Find when = 10, = 5, and = −8. 2. 4. Find when = 2, = 7, and = 10. 2. 5. Find when = 9, = −8, and = 12

The polynomial function of least degree with a leading coefficient of 1 is: f(x) = x3 + ax2 + bx + c

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.