What is a simpler form of the following expressions?

(j + 7) (j - 7)

a. j² + 14j - 49

b. j² - 14j - 49

c. j² + 14j - 49

d. j² - 49

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How to solve for x 4/X=12/7.5

What is the missing number in the pair of equivalent ratios? 5 : 12 = ? : 60

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An oblique prism with a square base of edge length x units has a volume of x3 cubic units. Which expression represents the height of the prism? x units x units 2x units x units

How to slimplify 4/7

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Scores on exam are normally distributed with a mean of 45 and standard deviation of 8 1. what is the probability that the score of a student will be higher than 52.6? 2. what proportion of the students score below 43? 3.

Avarie is cutting a 12 foot long piece of wood into 1/4 - foot sections. How many sections will result