Answer:
15
Step-by-step explanation:
i did maths
I think it's -2i+3
I hope this helps!
Answer:

Step-by-step explanation:
because there is 9 sevens so the seven would be to the power.
Answer:
(x, y) = (1, 2)
Step-by-step explanation:
y = 2x
3x + 4y = 11
3x + 4(2x) = 11
3x + 8x = 11
11x = 11
x = 1
So, y = 2.