Solve 3x + 6 =9

I will give brainiest to whoever answers first!

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

What are “like terms”? why can we only add like terms?

Draw a scaled copy of the circle using a scale factor of 2