HELP ASAP
How do I find the measure of

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x

Which choice names the hypotenuse of triangle xyz? a. segment yx b. segment yz c. segment ab d. segment zx

Last week , donnell practiced the piano 3 hours longer than marcus . together, marcus and donnell practiced the piano 11 hours . for how many hours did each young man practiced the piano