Answer:
y = √{(a - x)/2b}
Step-by-step explanation:
x=a-2by²
2by² = a - x
divide through by 2b
y² = (a - x)/2b
y = √{(a - x)/2b}
If we factorize the expression

We will get

Hope I helped!
Answer:
A
Step-by-step explanation:
-2.1 + 0.3 - 1.7 - 0.4 = -3.9
answer
A. -3.9 lbs