The grocery store has bulk pecans on sale, which is great since you're planning on making 7 pecan pies for a wedding. how many pounds of pecans should you buy?

5 pounds

The pounds of pecans that I should buy for seven pecan pies are:

4 pounds.

Explanation:

Since the question does not provide a minimum amount of nuts per cake, I assimilate that it should be adjusted to the amount commonly used to make a nut cake (8.82 ounces), so, since you want to make 7 nut cakes, said Value must be multiplied by the number of cakes to be made:

8.82 * 7 = 62.09 ounces.

Since the amount mentioned is not in ounces but in pounds, the conversion must be done (remember that one pound equals 16 ounces), so it operates:

62.09 / 16 = 3.88 pounds.

Since the grocery store probably does not sell fractions of a pound but a full pound, the amount of nuts (in bulk) is 4 pounds.