Write 3 x 7 x 7 x 7 x 7 as a index notation ​

Is there an x intercept in the equation 60*1.15^x

Ihonestly have no clue if it's each or none.

Which of the following statements are true about the graph of f (x) = 1/4 coz ( x + π/3) - 1? select two of the following that apply.