Identify the initial amount a and the growth factor b in the exponential function. f(x)=620*7.8^x

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x