Which expression is the simplest form of - (2x3 + x2) + 3 (23 – 4x)? A. 5x3 - 1122
B. x3 - 13x2
C. 23 - 32
Oo
D. 5r3
12x2

Answer and Explanation:

Gina wanted to swim at the pool. She is allowed to spend at most $30. The cost to swim in the pool is 3 dollars per hour plus a flat fee of $3. How many hours can Gina swim without going over her spending limit?

This problem can be represented by  .

'x' would be the number of hours. "At most" means less than or equal to. So, the value of x would have to be less than or equal to 30.

So, Gina would have a maximum of 9 hours to swim in the pool.

Hope this helps.