exam Maths Puzzle Numerical Ability

Can you please explain the steps. SOLVE AND GRAPH..

4x-7y=10
-3x+2y= -9

Read Solution (Total 0)

exam Other Question

help!
When I put this into my calculator it said "0"

solve for x

7e^5x=125
I put in 7 2nd Ln ^(5x)=125 (into a TI 83) what am I doing wrong?
What should the answer be? simplify:

(5Lm)^3 / (-2L)^4

thank you