4. Which statement is true? A. The value of the 7 in 17,265 is 20 times the value of the 7 in 26,173.

B. The value of the 7 in 17,265 is 10 times the value of the 7 in 26,173.

C. The value of the 7 in 17,265 is 100 times the value of the 7 in 26,173.

D. The value of the 7 in 17,265 is to times the value of the 7 in 26,173.

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

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?