It’s c (plane) if your asking for two-dimensional set of points
Answer:
3/4 or 0.75
Step-by-step explanation:

Answer:
-15
Step-by-step explanation:
x2 – 2(x - y) – 23
if x = -3, y = 4 and z = -1
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-3 x 2- (-3 - 4) - 23
-15
Answer:
The each have to place 2 subscriptions
Step-by-step explanation:
Adriana
E (earnings) = 6 + 2*x where x is the number of subscriptions
Sophie
E (earnings) = 4 + 3x
For them to earn the same amount, their right sides must be equated.
4 + 3x = 6 + 2x Subtract 2x from both sides
4 + 3x - 2x = 6+ 2x - 2x Combine
4 + x = 6 Subtract 4 from both sides
4 - 4 + x = 6 - 4
x = 2