Iam confused:

seven halves x plus one half x equals 3 and one half plus nine halves x

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?