Use the unit rate of $2.09 per pound to find the cost of 8.5 pounds of grapes. [Type your answer as a number and round to the nearest cent] 8.5 pounds of grapes=$

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)