Thomas bought 4 shirts from a store. the price of each shirt was the same. after he bought the shirts, his account balance showed a change of −$89.08. what would have been the change to thomas's account balance had he only bought 1 shirt from the store $22.27 −$22.27 $22.45 −$22.45

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

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

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?