In a certain normal distribution of scores, the mean is 30 and the standard deviation is 3. Find the z-score corresponding to a score
of 23
a. 10.00
c. 7.7
b. 2.33
d. -2.33
Please select the best answer from the choices provided

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?