Solve the problem.A sample of 800 grams of radioactive substance decays according to the function 
where t is the time in years. How much of the substance will be left in the sample after 20 years? Round to the nearest whole gram.
A. 468 g
B. 1 g
C. 359 g
D. 0 g
Answer: C
Mathematics
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Use a calculator to solve the equation on the interval [0, 2?). Round the answer to two decimal places.sin x = -0.27
A. 0.27, 6.01 B. 0.27, 1.84 C. 0.27, 3.41 D. 3.41, 6.01
Mathematics
Add or subtract. Assume that variables represent nonnegative values.
+ 5
A. 10
B. -
C. 38
D. 8
Mathematics
Consider the 20-year fixed-rate home loan of $185,500 with an interest rate of 6.75%. What is the monthly payment?
A. $1,402.98 B. $1,430.93 C. $1,407.37 D. $1,413.59 E. $1,410.48
Mathematics
Write the fraction as an equivalent fraction with the given denominator.
= 
A. 
B. 
C. 
D. 
Mathematics