The anwser is c your welcome
Find the standard form of the equation of the parabola with a focus at (-4, 0) and a directrix at x = 4.
Probablity=desiredoutcomes/totalpossible
total possible=number of cards or number of letters which is 8 letters
desired is number is the letter "I", which is 3
3/8 is probality
in favor it is 3:5, because we are looking at odds of picking vs not picking
not is 5/8
3:5 s answer
A is answer
1/2 b-39=101
+39 +39
1/2 b= 140
2(1/2) b= 140(2)
b=280
