Ben had 15 flowers. he gave 7 flowers to his mom. now ben has 3 more flowers than allison.
how many flowers does allison have?

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%