The product of a + 3b and –a2 + 4ab + 2b is –a3 + xa2b + 2ab + 12ab2 + yb2. what are the values of x and y in the expression?

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.