Solve the linear equation.
- 
= 1
A. {- 12}
B. {-36}
C. {- 4}
D. {12}
Answer: A
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A certain radioactive substance decays exponentially with yearly decay factor of 0.96. There are initially 103 grams present. ? A: Write a formula that gives the amount A, in grams, of the substance remaining after t years. ? B: How much is left after 7 years? Round your answer to two decimal places. ? C: Plot the graph of A versus t over the first 20 years. ? D: How long will it take until only 26 grams are left? Round your answer to two decimal places.
What will be an ideal response?
Solve the equation and check your proposed solution.72 = -4z
A. 76 B. 1 C. -76 D. -18
Find the median for the data given.Number of phone calls made each day: 5, 2, 28, 13, 22, 50, 38, 37
A. 22 calls B. 28 calls C. 24.5 calls D. 25 calls
Perform the indicated operation. Write the sum as a fraction, whole number, or mixed number in lowest terms. 
+ 
A. 
B. 
C. 
D. 1