How can 18, 3, 24 = 30 in order of operations

Convert 16 yards to feet use the conversion rate 3 feet = 1 yard

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup