FIRST ANSWER GETS A BRAINIEST A movie was 3 and one-half hours long. If Lily turned the movie off One-fourth of the way through, how much time did she spend watching it?
StartFraction 1 Over 14 EndFraction of an hour
StartFraction 7 Over 8 EndFraction of an hour
1 and StartFraction 1 Over 7 EndFraction of an hour
14 hours

What expression is equivalent to 1/2(2+3x-6)

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

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .