Anybody know what X+3/4=7/8 is

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Astandard american eskimo dog has a mean weight of 30 pounds with a standard deviation of 2 pounds. assuming the weights of standard eskimo dogs are normally distributed, what range of weights would 99.7% of the dogs have? approximately 26–34 pounds approximately 24–36 pounds approximately 28–32 pounds approximately 29–31 pounds