The answer is the first choice because it is on google.
A=7d+13
A=7(4)+13
A= 28+13
A=41
950 x 13 /100 x 120/365 = $ 40.60. Hope that's helpful.
The probability of there being zero males is given by:

Similarly the probability of there being zero females is also 1/16.
The probability there will be at least 1 male and 1 female is therefore:

The answer is: 7/8.
45 minutes is equal to 1.5 times 30:
1.5*30=45
so she will also read 22*1.5 pages, which is 22+11=33
so she will read 33 pages