If you add Natalie's age and Fred's age, the result is 44. If you add Fred's age to 3 times Natalie's age, the result is 70 . Write and solve a system of equations to find how old Fred and Natalie are.

Adriveway is 60-feet long by 6-feet wide. the length and width of the driveway will each be increased by the same number of feet. the following expression represents the perimeter of the larger driveway: (x + 60) + (x + 6) + (x + 60) + (x + 6) which expression is equivalent to the expression for the perimeter of the larger driveway? a) 2(x + 66) b) 4x + 33 c) 4(x + 33) d) 4(x + 132)

Solve the system. -a+4b+2c=-8 3a+b-4c=9 b=-1 a.(0,11) ,-1,2) c.(1,1,-2) d.(2,-1,-1)

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?