Should you estimate while dividing decimals?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be