first test for the shoot method and first pass
second test for multiplication of numbers in an array
new test for subtraction. got it working with setting the range to start at one rather than the first value
test for division
Test for taking a symbol as an argument instead of a block
Assignment depending on whether arguments are passed or not
tests for taking a symbol as an argument and also for taking a number as an argument to be used as the first value
not the best way to handle the number of iterations but I dont know any other way