In cell H$7,$ trace the errors in the formula to identify the cause of the error message. Correct the formula so that the IF function tests whether the start date $($the range named SEO$\_$Start$)$ is less than the date in cell CA$.$ If it is$,$ multiply the billable amount $($cell G$7)$ by the discount rate $($cell H$4)$ and return the result. If it is not, retum the billable amount $($cell G$7)$ in cell H$7.$