Help i can solve it but i dont get it

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

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