Find 15% of 15% of 500. how does this compare to finding 45% of 500

How to choose the sign of the radical in the denominator of the formula for the distance from a point to a line.

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

Vinny is interviewing for a job. he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?