Select the letter of the correct answer Solve for x.

A) 5
C) -2
B) 3
D) 7
E)9

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

Simplify each expression for 18, 20, and 21

What is the slope of the line that passes through ( 1,4) and (1,-3)