A cleaning company charges $125 to visit a home and $40 to clean each room. How many rooms were cleaned if the total bill was $365.

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.