Can you write a raitional number in fraction form that is equivalent to - 1.5

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

[15 points, algebra 2]simplify the complex fraction and find the restrictions.

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1