Which expressions are equivalent when y=2 and y=5? a) 2y-1 and 3y-5+y b) 5y+4 and 7y+4-2y c) y+7 and y+2+y d) 3y-4 and 3y-2+y

Name the most appropriate metric unit for each measurement

Two cities a and b are 1400km apart and lie on the same n-s line. the latitude of city a is 23 degrees. what is the latitude of city b. the radius of the earth is approximately 6400km.

Suppose medical records indicate that the length of newborn babies (in inches) is normally distributed with a mean of 20 and a standard deviation of 2.6. find the probability that a given infant is between 14.8 and 25.2 inches long.