In a sequence of numbers, a5 = –9, a6 = –14, a7 = –19, a8 = –24 and a9 = –29. Based on this information, which equation is used to find the nth term in the sequence?

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?