12. DeAndre is going to the movie theater this weekend. He will buy a movie ticket and some items from the concession stand. The table below shows the total amount
DeAndre could spend, t, depending on the number of concession items he
purchases, c.
t
Total Spent,
Number of concession items
purchased,
1
$11.75
2
$15.50
4
$23.00
CLEAR ALL
If each concession item costs the same amount, which of the following equations
could DeAndre use to help calculate how much he will spend at the movies?

The rate of decay of a radioactive substance depends upon the amount present initially. the mass y (mg) of the radioactive substance cobalt-60 present in a sample at time t (years) is represented by the exponential equation y=50e −0.1315 t . answer the following questions in complete sentences. 1. how does the exponential equation above compare to the equation for simple interest that is compounded continuously? explain the similarities. 2. what is the initial amount of cobalt-60 in the sample? 2. how much cobalt-60 is left after 8.4 years? show your work. 3. what would be the y-intercept of the graph? what does it represent? 4. after how many years will the amount of cobalt-60 left be 6.25 mg? explain what happens to the cobalt-60 after 50 years? 5. discuss some “real-world” examples and uses of cobalt-60

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Which spreadsheet would be used to compute the first nine terms of the geometric sequence a^n=32•(1/2)n-1