1/2+ 7/8- 1/10

hint: rational numbers

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

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.

Which graph shows the solution set of x^2+4-12x/> 0