y? + 8y = 1
Solve the differential equation.
Mathematics
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Decide whether the expression is or is not an identity.
= 0
A. Identity B. Not an identity
Mathematics
Solve the problem.An economist predicts that the buying power B(x) of a dollar x years from now will decrease according to the formula B(x) = 0.61x. How much will today's dollar be worth in 7 years? Round the answer to the nearest cent.
A. $0.71 B. $3.28 C. $4.27 D. $0.03
Mathematics
Solve using the elimination method.6x + 5y = 28x - 5y = 96
A. (8, 7) B. (-7, -8) C. (7, -8) D. (-8, 7)
Mathematics
Solve the equation f(x) = 0 analytically and then use the graph of y = f(x) to solve the inequalities f(x) < 0 and 
f(x) = 1 - 2 log4(x + 7)
A. {-5}; (-5, ?); (-7, -5] B. {-3}; (-3, ?); (-7, -3] C. {-5}; (-7, -5); [-5, ?) D. {-5}; (-5, ?); (-?, -5]
Mathematics