Can you please give me correct answer​

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

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work

What is the value for this expression? 2e-5