What is the 19th term in sequence -1,-5,-

The sequence starts at -1 and counts backwards by 4s, so we can find the nth number in the sequence by evaluating the expression -1 - 4n for any number n. Here, we want to find the 19th term, so we set n = 19 and find it to be -1 - 4(19) = -1 - 76 = -77

The skating rink rented 872 pairs of skates during april and may.why? : if the skating rink rented three times the pair of skates in april during may, they rented 654 skates. 218 x 3 = 654then, if they want to know how many they rented during both april and may, then you just add 654 (may) and 218 (april) to give you 872 pairs of skates for both months.654 + 218 = 872hope this !