On the grid below, the vertices of triangle ABC are A(-1,9), B(7,2), and C(-1,2).

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Due to bad planning, two of the local schools have their annual plays on the same weekend. while 457 people attend one, and 372 attend the other, only 104 people were able to attend both. how many people went to at least one play?

Complete the steps to find 4.830 ÷ 5