Help please, i don’t get this question .

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

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.

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.