100 points answer fast

which ordered pair is the solution to the system?

{x+3y=6
4x+6y=−6

a.(6, 3)

b.(−3, 3)

c.(12, −2)

d.(−9, 5)

To prove p is equal to q using an indirect proof what would your starting assumption be?

Find the area of the regular hexagon if a side is 20 cm.

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)