Please help me on this if you can I will give points just please help if you don’t know the answer plz don’t answer it

Identify the percent of change as an increase or a decrease. 75 people to 25 people response - correct increase decrease question 2 find the percent of change. round to the nearest tenth of a percent.

The half-life of iodine-131 is approximately 8 days. find the amount of iodine-131 left from a 42 gram sample after 16 days. a: 10.5 grams b: 21 grams c: 0.0006 grams d: 34 grams

Create and solve a story problem about the runner who is training for a race include at least one fraction in your story