Max placed the same number of books on 4 shelves and he placed 7 books on the last shelf. there are a total of 27 books on all the shelves. find the number of books max placed on the first shelf.
which statement correctly describes how to solve the problem algebraically?
a) solve the equation 4x−7=27 where x is the number of books max placed on the first shelf.
b) solve the equation 4x+7=27 where x is the number of books max placed on the first shelf.
c) subtract 7 from 27 and then subtract 4.
d) subtract 7 from 27 and then add 4.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

The following graph of f(x)=x^2 has been shifted into the form f(x)=(x-h)^2+k

Acookie manufacturer advertised that every bag of a certain type of cookie contained at least 1000 chocolate chips. a consumer group bought 15 bags of cookies from a variety of locations, dissolved the cookies in water and hand-counted the number of chocolate chips in each bag. the average number of chocolate chips was 1161.6 and the standard deviation 117.6. a26. assuming a normal distribution, a 95% confidence interval for the mean number of cookies in each bag is (a) 1108.37 (b) 1108.13 (c) 1102.09 (d) 1096.86 to 1226.34 to 1214.83 to 1215.07 to 1221.11 (e) 1096.47 to 1226.73