Use distributive property to rewrite 1/2 (4x - 6)

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

What is the definition of exponential decay?

Evaluate the expression. (9 + 5)(3 + 2)0