Assuming There is ONLY ONE CORRECT ANSWER,
The probability of her guessing the answer without ruling out the choices is 1/5.
if 3 choices are ruled out, then 1 out of the remaining two is right, which gives the probability 1/2
now, 1/5 = 20% , while 1/2 = 50%.
Therefore her probability of getting the correct answer improves by 30% [ not much in a REAL test though :P ]
Hsbss s shsbdbshe shejsbshehd sbsjsbshs s shsjsbs
Below is the calculation showing the values of y or p(x) in each value of x.
y = p(x) = √x
y = √0 = 0
y = √1.44 = 1.2
y = √2.25 = 1.5
y = √3.24 = 1.8
y = √4.41 = 2.1
y = √5.29 = 2.3
Therefore, the ordered pairs in the graph are (0,0), (1.44, 1.2), (2.25,1.5),(3.24,1.8), (4.41,2.1), and (5.29,2.3).
F(x) = 3^x
f(x) = 27
3^x = 27
3^x = 3^3
x = 3
