A colony of bacteria doubles in population every 24 hours. if there were 20 bacteria initially, how many bacteria will there be after x days plz help

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18