I really need help plzzz

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

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

An object in geometry with no width, length or height is a(n):