The value of a machine depreciates every year at the rate of 10% of its value the machine was purchases. for rs 40000 when new and it was sold for 29160 find the no. of years that the machine was used

Nell has a sales clerk job that pays $12 per hour for regular gas work hours. she gets double time for any hours over 40 that she works in a week. how many hours did nell work if her weekly pay was $744

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges