Where would you add parentheses to make, nine times four minus two times five plus eight divided by two, equal 27?

Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?

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?