Look at pic

Time in Weeks
Which panda was heavier when they were born?

5x + 2 = 12 solve the following equation. then place the correct number in the box provided.

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?

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?