Calculate the number of whole years it takes for the population to decrease from 2180 to less than 1000

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)