Who do you write 30,290,447 in expanded form

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

Keith runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes

What is the volume of a cardboard box that measures 1 inch by 5 inches by 7 inches? the volume of the cardboard is cubic inches. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to the nearest tenth, like this: 42.5