Describe how to verify whether expressions are equivalent, and explain the purpose of verifying equivalent expressions.

Which of the following is correct interpretation of the expression -4+13

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years