18.
terri's project for the math fair is a magnificent black
box that she called a function machine. if you put 3
into her machine, the output is 8. if you put in 10, the
output is 29; and if you put in 20, the output is 59.
a.
what would her machine do to an input of 5?
what about –1? what about x? making an
input → output table may .