DANG, YALL SMART :O CAN U HELP WITH THIS ONE THOUGH?

The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by p(c)= -15c(c-8) what current will produce the maximum power?

Will mark brainliest! ( explain the answer too, it can be one sentence)

Hannah reads at a constant rate of 33 pages every 88 minutes. write an equation that shows the relationship between pp, the number of pages she reads, and mm, the number of minutes she spends reading.