Kwan's beginning account balance was $20. His ending balance is $0. What integer represents the change in his account balance from beginning to end?

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Ntriangle abc, m∠a = 35° and m∠b = 40°, and a=9. which equation should you solve to find b?