Solve for x

-1/5 = -5

A. 1
B. -1
C. 25
D. -25

Plz which expression is equivalent to the expression below?

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Can someone me with this problem . show your work .