Which expression can you simplify by combining like terms? CLEAR CHECK

12b2+4ab−3ba−6

17a2−6b2a+4ba−9

5b2−5a2+8a−b

14a2+6ab−3b−3a

Which system of linear inequalities is represented by the graph?

If mary had 320 toy cars and she gave her friend 50 cars and then she gave her brother 72 more cars how much toy cars would mary have left ● explain with proper details

Use the ratio test to determine whether ∑n=14∞n+2n! converges or diverges. (a) find the ratio of successive terms. write your answer as a fully simplified fraction. for n≥14, limn→∞∣∣∣an+1an∣∣∣=limn→∞.