If Sally has x books that are 2 pounds then her x books weights a total of 2x lbs.
8 books of 3 lbs weights 8*3=24lbs
All them add up to 62, therefore we can conclude to the equation :
2x+24=62
or we can simplify to
2x=38
or even
x=19
2b is basically 2 * b. When a number (called the coefficient) and a variable come together they multiply.
Answer:
The answer is C
Step-by-step explanation:
Answer:
The linear function is 
The reasonable domain is 
Step-by-step explanation:
Let
x ----> the time in hours
y ---> the distance in miles
we know that
The linear equation in slope intercept form is equal to

where
m is the slope or unit rate
b is the y-intercept or initial value
In this problem
The slope is 
The y-intercept is 
substitute

<em>Find the domain for x</em>
For y=120 miles
Find the value of x
substitute the value of y in the linear equation and solve for x




therefore
The domain is the interval [0,2]
