Roger owes his father $15. He borrows another $25 from him. What integer represents the balance that he owes his father?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

If i have one apple and give you the apple, how many apples do i have?

Evaluate the expression. (9 + 5)(3 + 2)0