Answer:
They switched the w and the -15 at the end
Step-by-step explanation:
When you switch the inequality sign after multiplying or dividing a number, the variable stays on the side its on, even if it looks weird.
the measurement of QP=8 CM
Answer:

Step-by-step explanation:

Do cross multiplication


Divide both sides by 12

Calculate

Hope I helped!
Best regards! :D
Area: make it two rectangles:
13 x 6 and 5 x 7
Area = 113 square m
Perimeter = 13 + 6+8+7+5+13 = 52 m