Which of the following is the sum of 16 4/7+3 3/7 reduced to lowest terms?

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?

Find the area of the triangle shown 3 by 6

Asap! i'm not good math and i'm lost.