Answer:
2 years and 3 months
Step-by-step explanation: 1991 to 1992=1yrs
1992 to 1993=2 yrs and May to August=3 months
Answer:

Step-by-step explanation:
We use the formula;

where m:n=2:3 and 
We substitute these values to get;

We simplify to get:


The number that belongs in the blank space is answer choice A. 6
Answer:
y = 8x+7
Step-by-step explanation:
firstly reduce the equation to an arithmetic series starting from the 0th term so:
7, 15, 23, 31, 39....
Secondly, identify the common difference: 8
we now know that the answer must contain 8x
Thirdly, form the equation 8x + c = y where y is a constant. Afterwards insert the values of any given x and y so:
8*0 + c = 7
c = 7
Thusly we now know that the series and thus equation is 8x+7 = y