To increase an amount by 7 percent what single multiplier would you use

How do i put 3(x+7) in distributive property

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?