Winters can be very cold in Pennsylvania! When a cold front comes through the temperature can change quickly. The table shows the amount of change per hour during a cold front in Philadelphia, PA.

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)