the half life of mathium is 23 days. a 15g simple of the element is monitored over time a) write an equation that models the mass of mathium remaining over time b) determine the number of days it would take for their to be 1.05g of mathium left.

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x