Answer:
$ 0.4
Step-by-step explanation:
if we assume head costs $ x then,
body will cost $x + 2 (2 more than head)
and tail will cost $x+1
x+x+2+x+1 = $ 4.20
or, 3x = 4.20-3
or, x= 1.20/3
therefore, x=0.4
7+3+8+3=21 fishes in total
8/21 fishes are healthy
8/21 = 0.4 => 40%
bearing in mind that an explicit form is simply the sequence written as a function of some variables, so we simply simplify and add like-terms.

Answer:
6
Step-by-step explanation:
5+8+6+5+10+7+1=42
42/7=6
25% of 88 =
0.25 × 88 = 22
88 + 22 = 110
Answer = 110
Hope this helped☺☺