Answer:

Step-by-step explanation:
Let y represent the given situation.
Given:
Andrew's age = a
We need to find the expression for given abatement.
Solution:
The given statement: Five years less than four times Andrew’s age
Five years less than four times Andrew’s age = 
Andrew's age is known, so we substitute Andrew's age = a


Therefore, the expression for the given situation 
Answer:
x = 28/5
Step-by-step explanation:
We can use proportions to solve
5x 7
------ = ---------
8 2
Using cross products
5x*2 = 7 * 8
10x = 56
Divide by 10
10x/10 = 56/10
x = 28/5
Number 7 you divide 6.48 by 4
Answer:
Step-by-step explanation:
Hey i.m cute date me well have good fun than adri or I'll kill her
Answer:
E(X) = 1.28
Var(X) = 0.6016
E(X | Y=2) = 1.6667
Var(X | Y=2) = 0.4272
Step-by-step explanation: