Answer:
They need 2 and 1/2 rolls.
Step-by-step explanation:
Area = length x width
A = l x w
A = 20 x 3
A = 60 ft²
If 60 ft² = 1 roll
What about 150 ft² = ?
= (150 x 1) ÷ 60
= 150 ÷ 60
= 2.5
= 2 and 1/2 rolls
Answer:
Domain: 
Inverse: 
Step-by-step explanation:
Since this is a linear function, the domain and range is simply the set of real numbers.
The inverse is obtain by switching the places of x and y, then solving for y.
Here,
y = -x + 5
So switching x and y,
x = -y + 5
Solving for y again,
y = -x + 5
Thus,


Substitute the given value of x into the first equation

To solve for x distribute 3 though the parentheses

Collect like terms

Move the constant to the right-hand side and change its sign

Add the numbers

Divide both sides of the equation by 13

Now, Substitute the given value of x into the second equation

Plug in the value of x in the equation i.e. 1

Any number multiplied by 1 results in number itself

Calculate the difference

The possible solution of the system is the ordered pair (x,y)

Let's get started!! hahah
The tenths place is the place right after the decimal
When rounding,
This number either stays the same (if the number after it is lower than 5)
or increases by 1 (if the number after it is 5 or greater)
1) 29.516. 5 is in the tenths place look at the number after this.. 1: it is LESS THAN 5 so the answer is 29.5
2) 84.78 7 is in the tenths place look at the number after this.. 8: it is GREATER THAN 5 so the answer is 84.8
3)1017.36 3 is the tenths place look at the number after this.. 6: it is GREATER THAN 5 so the answer is 1017.4
Hope that helps