Given the directrix of y = 6 and focus of (0, 4), which is the equation of the parabola? y = −one fourthx2 + 5 y = −one fourthx2 − 5 y = one fourthx2 + 5 y = one fourthx2 − 5

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?