Solve the problem.A box contains a radioactive substance. The number of kilograms r(t) at time t years is given by the formula 
How long will it take until only one-half kilogram of the radioactive substance is left in the box?
A. 184.71 yr
B. 738.83 yr
C. 369.41 yr
D. 3694.13 yr
Answer: C
Mathematics
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Graph each number on the number line.-4.75, -2, 0, 2.25
A. 
B. 
C. 
D. 
Mathematics
Solve the equation.4n - 2 = 18
A. 20 B. 16 C. 6 D. 5
Mathematics
Solve the problem.If the price of a product is given by P(x) = 
+ 1500, where x represents the demand for the product, find the rate of change of price when the demand is 4.
A. 64 B. -64 C. 256 D. -256
Mathematics
Translate the sentence into an equation, then solve.A number x decreased by 7.4 is 14.
A. 7.4 - x = 14, x = 21.4 B. 7.4 - x = 14, x = 6.6 C. x - 7.4 = 14, x = 21.4 D. x - 7.4 = 14, x = 6.6
Mathematics