What is the percent of decrease from 150 to 65

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

Ineed me i stuck and i don’t want to get it wrong

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.