Determine and explain the error. Include the correct answer. How might you explain or demonstrate why the answer isn't correct? Help explain an alternative approach including an explanation of WHY this works conceptually.

How are algebraic expressions evaluated using substitution?

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 : )