(12x+9)−(3x+7)

there's a ( sign before 12x

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

The volume of the a sphere whoes diameter is 18 cm is cubic cm . if it's diameter were reduced by half, it's volume would be of its original volume

During the election for class president, 40% of the students voted for kellen, and 60% of the students voted for robbie. 500 students voted in total. how many more students voted for robbie than for kellen? answer with work : )