Solve. x2 − 8x − 12 = 36 a) x = 4, x = 6 b) x = 4, x = −12 c) x = −4, x = 12 d) x = −4, x = −6 the x2 being x squared because i cant use an exponent on my computer

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?