2(x + 3)+ 8 + 5(x - 2) + 4x + 3 this problem simplified would be:

Write a real-world solution that can be represented by the equation y = 7x be sure to explain what the variables represented in the solution

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?