What is the solution set of –(x + 4)(x – 5) ≤ 0? (–4, 5) [–4, 5] (–∞, –4) U (5, ∞) (–∞, –4] U [5, ∞)

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

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

How to do this , and can some one explain