Simplify the following expression:
−
2
x
2
−
1
+
1
x
+
1
−
1
x
−
1

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

2/3(-6y+9x) expand each expression using the distributive property