Answer:
Possible values of fredicos age satisfy
where
denotes fredicos age.
Step-by-step explanation:
Let
denotes fredicos age.
Three times the difference of fredicos age and 4, increased by 7 = 
According to the question,

So, possible values of fredicos age satisfy 
Here,
denotes fredicos age.
Answer:A and B
Step-by-step explanation:
Answer:
2) 1
3) 9
4) 78
Step-by-step explanation:
2)
1 showed up the most
3)
range = max value - min value
range = 9 - 0
range = 9
4)
mode means which showed up the most,
78 showed up the most
$425 is the awnser for this one have a great day