Fred is 4 times as old as nathen and is also27 years older than nathen

Nathen is 9 years old and Fred is 36 years old.

Step-by-step explanation:

set Nathen's age = x

set Fred's age = 4x (because he is 4 times as old as Nathen)

4x = x + 27

3x = 27

x = 9 (Nathen's age)

4x = 36 (Fred's age)

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

there would only be 50 odd numbers between 1 and 100 so therefor there would be 50 even so that would only be 50 odd numbers.