URGENT please help me I have been asking this question for a while now and all I get is people putting other websites and link.

Adaycare center charges a $75 enrollment fee plus $100 per week. which of the following represents the cost of sending a child to daycare for 14 weeks?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.