Answer:
Step-by-step explanation:
Subtract the equations we get
-3y=-3
y=1
x=3-1=2
x=2
<span>Which kind of function best models the set of data points (–1, 22), (0, 6), (1, –10), (2, –26), and (3, –42)?
LINEAR. I arrived at that conclusion after solving for the slope.
m = y1 - y2 / x1 - x2
m = 22 - 6 / -1 - 0 = 16/-1 = -16
m = 6 - (-10) / 0 - 1 = 16/-1 = -16
m = -10 - (-26) / 1 -2 = 16/-1 = -16
</span><span>Which kind of function best models the set of data points (–3, 18), (–2, 6), (–1, 2), (0, 11), and (1, 27)? NONE OF THE ABOVE
</span><span>3. What function can be used to model data pairs that have a common ratio? EXPONENTIAL</span><span>
</span>
56 - 12 = 44 comics left after giving 12 to his brother.
44 + 14 = 58 comics after borrowing 14 from his friend.
Ray now has a total of 58 comics.
Answer:
X = 3
Y = 100
Step-by-step explanation:
The best way to solve equations like this is to plug & chug.
First, choose an equation and replace the Y variables with the y=... equation
Y = 30x + 10
(20x + 40) = 30x + 10
Then isolate the variable by subtracting 10 and 20x from both sides
40 - 10 = 30x - 20x
30 = 10x Divide by 10
3 = x
Y is much simpler; Plug x = 3 into one or both equations, plugging it into both will check your answer.
y = 20(3)+40
y = 60 + 40
y = 100
To double check math plug both variables into the other equation.
100 = 30(3) + 1=
100 = 90 +10
100 = 100
158=z
z=t
180-t=x
180-158=22