Bob brings home 156.40 his gross is 184.00 what percentage do he bring home

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

With alll of except for the 2 that i did already

P= price tax is 4% added to the price. which expression shows the total price including tax?