If your allowance was a penny doubled every day, how many days would it take for you to have over $1000.00? $10,000.00? how much money would you have on the 15th day?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Given: ac and db are diameters. m∠3=

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.