Solve the equation.- 
k = - 6
A. k = 6
B. k = -4
C. k = 7
D. k = 20
Answer: D
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On a certain island new species are being introduced at a rate of
species per year.
But conditions cause species extinction at a rate of
species per year.
Here t is the time in years. Equilibrium occurs when the rate of extinction is the same as the rate new species are being introduced.A: The time when equilibrium occurs is the solution of an equation. Which equation?B: Plot the graphs of both N and E on the same coordinate axes over the first 10 years of activity.C: When does equilibrium occur? Round your answer to two decimal places.D: What is extinction rate when equilibrium occurs? Round your answer to two decimal places.
What will be an ideal response?
Solve.Mary and her brother John collect foreign coins. Mary has twice the number of coins that John has. Together they have 105 foreign coins. Find how many coins Mary has.
A. 70 coins B. 35 coins C. 63 coins D. 14 coins
Find the missing parts of the triangle. A = 103.8°a = 1257 cmb = 1357 cmIf necessary, round angles to the nearest tenth and side lengths to the nearest cm.
A. B = 36.7°, C = 39.5°, c = 1551 cm B. no such triangle C. B = 39.5°, C = 36.7°, c = 1551 cm D. B = 32.8°, C = 43.4°, c = 1551 cm
If $7,000 is invested with an interest rate of 6%, compounded continuously, determine the amount of money in the account after 5 years. Use the formula 
. Round your answer to the nearest cent.
a. $9,449.01 b. $12,754.83 c. $10,033.31 d. $1,038,892.11