The mean age of 6 women in an office is 21 years old. The mean age of 7 men in an office is 22 years old. What is the mean age (nearest year) of all the people in the office?

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)

X+y=-4 x-y=2 use elimination with adding and subtraction

Atruck can be rented from company a $50 a day plus $0.60 per mile. company b charges $20 a day plus $0.80 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company a and company b are the same