A rock of radioactive material decays at a rate of 7% an hour. There are currently 1,240 atoms in the rock. What would the formula for decay look for in this situation? How many atoms will be in the rock after 3 hours? How many atoms will be in the rock after 3 days?

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

If 3x+8=3x+8 is it one solution or no solution