3. Maria makes money by commission rates. She gets 15% of everything she sells. If Maria sold $23000 worth of items this month, what is her salary for the month? 4. Tiffany makes money by commission rates. She gets 21% of everything she sells. If Tiffany sold $27000 worth of items this month, what is her salary for the month? 5. Peter makes $7000 a month plus some money by commission rates. He gets 6% of everything he sells. If Peter sold $55000 worth of items this month, what is his salary for the month? 6. Jose makes a base monthly salary of $2700. As a vendor, he must sell $30000 worth of items per month. He also makes a 10% commission on all sales beyond the monthly quota. There is also an additional 10% bonus on top of the normal commission rate for any sales beyond $39000. If Jose sold $42000 worth of items this month, what is his total salary for the month including base salary and commission to the nearest dollar