Element X decays radioactively with a half life of 9 minutes. If there are 860 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 94 grams?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Aline passes through the point (–7, 5) and has a slope of 1/2 which is another point that the line passes through?

Vinny is interviewing for a job.he wants his take home pay to be at least $42,000.what is the least salary he can earn if he pays 25% income tax?