Question

A snail travels at a rate of 2.58 feet per minute. Write a rule to describe the function. How far will the snail travel in 9 minutes?

Answer 1

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d = r * t 
d = ??? 
r = 2.58 feet / minute 
t = 9 minutes 

d = r * t 
d = 2.58 * 9 
d = 23.22 feet 

Edit 
=== 
You wanted a rule. It is d = r * t 
d = 2.58 * t

Answer 2

Answer:

$f(x)=2.58x$

It will travel 23.22 feet in 9 minutes.

Step-by-step explanation:

Given,

The snail travels at a rate of 2.58 feet per minute.

The distance covered by it in one minute = 2.58 feet,

Thus, the distance covered by it in x minutes = 2.58x

Let f(x) represents the its distance in x minutes,

$\implies f(x)=2.58x$

Which is the required function,

For x = 9,

$f(9)=2.58\times 9=23.22$

Hence, it will travel 23.22 feet in 9 minutes.