Solve by factoring of finding square roots. x^2+9x+20=0
a. -4,-5
b. -2,10
c. 4,5
d. 2,10

For what values of b will f(x)= logbx be a decreasing function? (16 )

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)