If f(x)=2x−3 and g(x)=4x+5, what is (f⋅g)(x)?

(f⋅g)(x)=8x^2−2x−15
(f⋅g)(x)=6x+2
(f⋅g)(x)=8x^2+22x−15
(f⋅g)(x)=8x−15

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.

What is the relationship between all triangles that can be drawn given the same three angles

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?