Astudent says that if 5x2 = 20, then x must be equal to 2. do you agree or disagree with the student? justify your answer.

Aportion of a line bounded by two points is defined as

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

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