Derive the equation of the parabola w a focus at (4,-7) and a directrix of y = -15. put the equation in standard form. a f(x)- 1/6 x^2-8x+11
b f(x)=1/16 x^2-8x-10
c f(x)=1/16 x^2-1/2x+11
d f(x) = 1/16 x^2-1/2x-10

15 point ! ~ see if you know the answer to both you!

Acoffee shop orders at most $3,500 worth of coffee and tea. the shop needs to make a profit of at least $1,900 on the order. the possible combinations of coffee and tea for this order are given by this system of inequalities, where c = pounds of coffee and t = pounds of tea: 6c + 13t ≤ 3,500 3.50c + 4t ≥ 1,900 which graph's shaded region represents the possible combinations of coffee and tea for this order?

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3