Jimmy is casting his fishing line with a bobber attached over the edges of the pier the function H=-16t^2 +46t+6 gives the bobbers height H above the ground in feet after T seconds how many seconds does it take for the bobber to hit the water

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?