In the old aquarium, 3 tablespoons of salt were used for 20 gallons. That's a conversion ratio of

That is, for every gallon of water in the aquarium, there was 0.15 tbsp of salt. So a 50 gallon aquarium, Ill should add

to maintain the salinity.
Answer:
A
Step-by-step explanation:
Given
x - 4 = - 2 ( add 4 to both sides )
x = 2 ( multiply both sides by 6 to clear the fraction )
5x = 12 ( divide both sides by 5 )
x =
= 2
→ A
This function is Nonlinear
Answer:
16
Step-by-step explanation:
16 divided by 4=4
16+4=20
20 divided by 5=4