8. Sodium-24, radioactive decay: The radioactive element sodium-24 has a half-life of 15 hr and is
used to help locate obstructions in blood flow. If
the procedure requires 0.75 g and is scheduled to
take place in 2 days (48 hr), what minimum
amount must be on hand now (to the nearest
hundredth of a gram)?

Jackie bought a bag of oranges. she used 3/8 of the oranges to make orange juice. she used 1/3 of the oranges to make a fruit salad. she put 1/8 of the oranges in a bowl on the table. she put 2/12 of the oranges in the refrigerator. a) jackie left more oranges on the table than she put in the refrigerator. b) jackie used fewer oranges to make orange juice than she left on the table. c) jackie put fewer oranges in the refrigerator than she used to make the fruit salad. eliminate d) jackie used more oranges to make a fruit salad than she used to make orange juice.

Enter the missing numbers in the boxes to complete the table of equivalent ratios.time (min) distance (km)? 36 9? 1512 ?

Does anyone know how to do geometryme with this problem