The local grocery store sells a bag of dog food for $22. The store pays $13 for the dog food. Which equation can be used find the markup on the dog food?
A
2 +9 = 13
B
2 + 13 = 22
C
- 9 = 22
D
- 22 = 13

Could someone with number 1 and 2

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%