Imainly need with making a equation
the youth group is going on a trip to the state fair. the trip costs $63. included in that price is $13 for a concert ticket and the cost of 2 passes, one for the rides and one for the game booths. each of the passes costs the same price. write an equation representing the cost of the trip, and determine the price of one pass. solve your equation by showing your work and steps.

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