Answer:
.
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
-2 + 7 = 5
Let this number be x. The next number is (x+1). And their sum is 57. Then, we have to solve this equation x+x+1=57

Emily's number was 28
Answer:
36 people
Step-by-step explanation:
The expected value E(X) = mean of sample = np
Where, p = population proportion, p = 9% = 0.09
n = sample size, = 400
The mean of the number of people with genetic mutation, E(X) = np = (400 * 0.09) = 36
36 people
The solutions would be x=8 and x=2