Find a polar equation of the form r2=f(θ) for the curve represented by the cartesian equation x2−y2=1. (note the power of r in the equation! ) note: since θ is not a symbol on your keyboard, use t in place of θ in your answer.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Which expression is equal to (f+g)(x)?

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?