How to justify each step in the solution of 5x+15=0

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Glenda makes an online purchase for picture frames for $12.95 each and formats of $5.89 each the site says it taxes paid by the customer or 6.5% of the total purchase price shipping charges are based on the

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22