The amount remaining A, in grams, of a radioactive substance is a function of time t measured in years. The equation of change for A is
?
.
?
A: What can you conclude about the function 
?B: If there are initially 48 grams of the substance present, find a formula that gives A in terms of t. Write your answer using the alternative form for an exponential function.C: How long will it take before only 
of the original amount is left?
What will be an ideal response?
.?
B: 
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C: 27.47 years
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Determine whether the given value is a solution of the inequality.x - 3 ? -4; -1
A. A solution B. Not a solution
Find the prime factorization of the product.45 ? 15 ? 49
A. 3 ? 9 ? 5 ? 5 ? 7 ? 7 B. 3 ? 3 ? 5 ? 5 ? 7 ? 7 C. 3 ? 3 ? 3 ? 3 ? 5 ? 7 ? 7 D. 3 ? 3 ? 3 ? 5 ? 5 ? 7 ? 7
Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.11 km = 
mi
A. 10.4 mi B. 6.8 mi C. 11.7 mi D. 17.7 mi
Find the slope of the line through the pair of points.(-1, -4) and (-1, -8)
A. - 
B. - 
C. Undefined
D. -4