The answer would be 2 months because she has read 4 books and they read 2 a month so, 2 months.
Theres an app called photomath that could easily solve problems like this

True

As it is said in the question the probability of getting a head is 0.5. And, if we toss it two times it will be 0.25.
We'll have to multiply 0.5 with 0.5.

Answer:
-18
Step-by-step explanation:
Given:
f(x)=4-x^2 and g(x) =6x
h(3) = (g-f)(3)
= 6x - (4x^2)
= 6*3 -(4*3^2)
= 18 - 4*9
= -18