The total cost of 2 identical files and 1 pen is $19.05. The total cost of 3 such files and 5 such pens is $44.50. Find the cost of 1 pen.​

Alawn mower manufacturer incurs a total of 34,816 in overhead costs and 388 per lawn mower in production costs. how many lawn mowers were manufactured if the average cost of productions is 660

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Is it greater than or less than7*3_9*2