Question

Find the value of Q in the following system so that the solution to the system is (2,3).

Answer 1

D) 21

1) In this problem, to satisfy this condition, we need to plug into the 2nd equation that ordered pair.

2) Therefore, we can write out this:

$\begin{gathered} I)\:x-2y=-4 \\ II)\:3x+5y=Q\Rightarrow3(2)+5(3)=Q\Rightarrow Q=21 \\ \end{gathered}$

3) Thus, the answer is D. 21