Estimate the sum or difference.
1. 4/6+1/8=
2. 2/6+7/8=
3. 5/6-3/8=
4. 4/6+3/8=
5. 7/8-5/6=
6. 1/6+7/8=

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Jose is going to use a random number generator 500500 times. each time he uses it, he will get a 1, 2, 3,1,2,3, or 44.