Question

PLEASE HELP ASAPPPPPPPP

Answer 1

`f(x)=a\cdot b^x\\\\\text{a-the initial amount}\\\\\text{b-growth factor}`


`\text{We have:}\ f(x)=620\cdot7.8^x\\\\\text{a=620; b=7.8}`


`\boxed{Answer:\ B.\ 620,\ 7.8}`