The price of a burger went from $6.00 to $8.00. what is the percent of change? this is increase and decrease

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?

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?