Which algebraic expression represents the difference of fifty four and seven times a number

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with