Answer:
x+y=11
Step-by-step explanation:
take the square root of both sides.
(x-7) + (y+3) = 7
collect like terms
x+y = 7+7-3
Stevie has 25marbles
Freddie's has 25x2:50marbles
Danny has 50+5:55marbles
Y = mx + b
where m is the gradient (slope)
-4y = 11 - 8x
4y = 8x - 11
y = 2x - 11/4
m = 2
The correct answer is A.
The answer is A, make sure to combine like terms
