Answer:
-4
Step-by-step explanation:
3+1 = 4 so just put a dash at the start and you ger -4
For this, you have to calculate Unit rates of all of them.
Unit rate of sample 1, = 10/25 = $0.4
U.R. of sample 2, = 18.50/50 = $0.37
U.R. of sample 3, 27.20/80 = $0.34
So, first one is costlier!!!
Answer:
x = -2, y = 7
Step-by-step explanation:
Since it's a system of equations, we know that the they use the same variables. To use substitution to solve a system of equation, we must take one equation and solve it for a variable, then you plug the solution into that variable for the other equation:
-2x + y = 11
y = 2x + 11
-------
4x + 4y = 20
4x + 4(2x + 11) = 20
4x + 8x + 44 = 20
12x + 44 = 20
12x = -24
x = -2
Then we can plug "x" into the first equation:
-2x + y = 11
-2(-2) + y = 11
4 + y = 11
y = 7
D. The change in the elevators height for every one additional second
The domain of the graph is the set of all real values
<h3>How to determine the domain?</h3>
The domain is the set of x values of the graph
From the graph, the x values extend in both directions without end
This means that the x values can accommodate all real values
Hence, the domain of the graph is the set of all real values
Read more about domain at:
brainly.com/question/13113489
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