Identify the expression equivalent to 4(x + x + 7) - 2x+ 8 - 4 by substituting x = 1 and x = 2

Evaluate the dot product of (3,-1) and (1,5)

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.

Which number line correctly shows 0.8 + 0.3?