25.20, that might help you hopefully!
You can tell if the equation is linear or not if the equation makes a straight line on a graph.
Answer:
I am will take 20 years to get 20$
My friend will take 10 years to get 20$
Step-by-step explanation:

I hope this is be good for you and I want this money
Answer:
I you will draw a number less than thirteen one fourth of the time. so 25%
Step-by-step explanation:
52 divided by 13 is four.
Answer:

Step-by-step explanation:
Let x = the number of all the species of birds sighted in the park
“300 species of birds that migrate. This accounts for 2/7 of all the species of birds sighted in the park”
the above sentence means “(2/7)x = 300”
now we can solve it :
(2/7)x = 300
⇔ 2x = 7×300
⇔ 2x = 2100
⇔ x = 2100/2
⇔ x = 1050