You can use desmo its a site that helps graph
52 i believe.
42 + 45 + 58 + 63 = 208
208 / 4 = 52
The second one I beileve is the answer to your question
We immediately note that 3 and 9 are multiples. Therefore, they are factorable. 9 goes into 3 three times, and 3 goes into three 1 time. Therefore, we can take out three from the whole expression to get 3(c - 3).