Answer:
y = -4/3 x=-1/3
Step-by-step explanation:
y = x2 + 2x – 3 and y = x – 1
y= (y + 1)2 + 2(y + 1) - 3 and x= y+ 1
y= 2y + 2 + 2y +2 and x= y+ 1
-3y = 4 and x= y+ 1
y = -4/3 and x = (-4/3) + 1 = -1/3
x2 is x squared or x multiplied by two
12+6+15=12+6+15 is the correct answer
Answer: 12
Step-by-step explanation: Since 11 is ruled out, answer is 12 people
42x+18y
Is probably the correct answer
B. Just find the percentage to see if it is correct

It equals about .3356, but multiply it by 100 to get its percentage which is about 34%. So yes it is correct.
C.

Simplified would be a ratio of

So they would be incorrect
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