Someone plzzz ! i need the answers and show my work..

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

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

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?