A survey was taken of 400 shoppers. The shoppers were asked about purchases they had made within the past 30 days. They were asked whether they had made their purchases at a big box store, a locally owned store, and/or online store. How many shoppers made a purchase at a locally owned store and online store but NOT at a big box store?

38

56

109

179

Girardo is using the model below to solve the equation . girardo uses the following steps: step 1 add 4 negative x-tiles to both sides step 2 add 1 negative unit tile to both sides step 3 the solution is which step could be adjusted so that gerardo's final step results in a positive x-value? in step 1, he should have added 4 positive x-tiles to both sides. in step 1, he should have added 3 negative x-tiles to both sides. in step 2, he should have added 4 negative unit tiles to both sides. in step 2, he should have added 1 positive unit tile to both sides.

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?