Answer:
All you need to do is suppose x = 3x :

------ Happy LearninG <3 ----
No, a function is always a relation. A relation may not always a function but the vice versa is true.
It's like the relationship between a rectangle and a square. A rectangle has 4 right angles and 2 sets of congruent sides while a square has 4 right angles and all sides are congruent. Which means that a rectangle is a square, but a square may not always be a rectangle.
Answer:
1,174.958 gallons
Step-by-step explanation:
Begin by finding the volume of the cylinder V= π x r² x h
V = 3.14 x 25 x 2 = 157.08
Then multiply 7.48 gallons per cubic foot
7.48 x 157.08 = 1,174.958 gallons
Answer: $432
Step-by-step explanation: If he marks up the price by 80% then you multiply the price (240) times 0.8, which is 192. That is how much he marks it up -- $192. SO then you add how much he marks it up to the original price of $242 which is $432.