What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3?

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing

According to the data set, where should the upper quartile line of the box plot be placed?

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?