Answer: c. Let d represent Enrique's distance from home (in miles).
e. Let w represent Enrique's weight in pounds
Step-by-step explanation:
A variable is a particular type of value that denotes an unknown quantity.
- It is denotes by using alphabets.
- It can change.
To define a variable , we need define a amount or quantity with units and in case of length an exact position is required.
a. Let w represent Enrique's weight
It is not a variable because no units is defined.
b. Let d represent Enrique's distance (in miles).
It is not a variable because the points to establish distance traveled by Enrique is not given .
c. Let d represent Enrique's distance from home (in miles).
It is a variable as both units and position as mentioned.
d. Let d represent Enrique's distance from home.
It is not a variable because no units is defined.
e. Let w represent Enrique's weight in pounds.
It is a variable because unit of weight is mentioned.
Hence, the correct statements that properly define a variable are :
c. Let d represent Enrique's distance from home (in miles).
e. Let w represent Enrique's weight in pounds
<em>this is the formula we will use because the signs match the one in the question</em>.
, now we need to solve for
, but
.
and
are on both sides, so dive them and they will be canceled out.
and you will have your value for