Answer:
3.4 pages per minute
Step-by-step explanation:
Divide your number of pages by the minutes to calculate the unit rate.
Answer:
Step-by-step explanation:
b x 1
Answer: 
Step-by-step explanation:
When you multiply fractions, you multiply straight across and simplify.
[multiply]
[simplify]

Now, we know that the product is
.
Answer:
d. 9x + 63 and 63 square feet
Step-by-step explanation:
Given
Original


Extended



Required
Determine an expression and the value of the extended area
First, we calculate the area of the original desk


From the given parameters, we have:
--- area of the new surface
Open bracket

The area of the new surface is the summation of the area of the original desk and the area of the extended portion (E)
So:

Make E the subject



Hence, the area of the extended portion is 63
A linear regression equation is a line so it has a form of y = mx + b, which is an equation of a line. You will also see it as Y = a + bX. In the form of Y= a +bX the b is the slope.
There are different methods to fitting a line and the most common method is the method of least-squares.