Acme Movers charges $210 plus $40 per hour to move household goods across town. Hank's Movers charges $75 per hour. For what lengths of time does it cost less to hire Hank's Movers? It costs less to hire Hank's Movers for times less than '1 hours. Kyle plans to invest $5000, part at 5% simple interest and the rest at 6% simple interest. What is the most that he can invest at 5% and still be guaranteed at least $270 in interest per year? He can invest at most $|:|. Afoundation invests $80,000 at simple interest, a part at 7%, twice that amount at 3%, and the rest at 6.5%. What is the most that the foundation can invest at 3% and be guaranteed $4745 in interest per year? The foundation can invest at most $ at 3%. (Simplify your answer.) Curt can be paid in one of two ways for the furniture he sells. Plan A: Salary of $800 per month, plus a commission of 10% of sales. Plan B: Salary of $1200 per month, plus a commission of 15% of sales in excess of $8000. For what amount of monthly sales is plan B better than plan A, assuming Curt's sales are always more than $8000? Plan B is better than Plan Awhen Curt's sales are more than is