Will give brainliest! explain how to solve this! given the proportion of a/b=8/15 what ratio completes the equivalent proportion of a/8?

Solve with work adding cheese to a mcdonalds quarter pounder increases the fat content from 21g to 30g. what is the percent of change ?

The volume of a cube-shaped shipping container is 13,824 cubic inches. find the edge length of the shipping container.

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?