Help me solve for the variable
-12r + 4 = 100
r=

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

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?