7/1 is an equivalent fraction for 70/10
Answer:
for question 1 it is the first one. and for question 2 it is b
Step-by-step explanation:
i did this already
Sorry could you elaborate a bit further on the question
The equation will be of the form:

where A is the amount after t hours, and r is the decay constant.
To find the value of r, we plug the given values into the equation, giving:

Rearranging and taking natural logs of both sides, we get:


The required model is: