Anyone else ready for this?​

How many grams are in 8 kilograms? if 100 grams = 1 kilogram

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

One file clerk can file 10 folders per minute. a second file clerk can file 11 folders per minute. how many minutes would the two clerks together take to file 672 folders?