X^2+3x-18 what are the zeros of r(x)?

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Me i'm timed ! a. -2 to 1 b. -1.5 to 0.5c. 0 to 1d. 0.5 to 1.5

The half-life of a certain material is 0.002 second. approximately how much of a 14-gram sample will be left after 0.004 second? a. 12 grams b. 3.5 grams c. 0.06 gram d. 7 grams