Find all the intervals on which the graph of the function is concave upward: f(x) = x^2 + 1/ x^2

I’m so stuck on this question i’ll give anybody brainliest and free points for the correct give the most space to a. the largest vehicle b. the fastest road user c. a potential drunk driver d. the biggest hazard

Afootball game between the thunder and the sharks is in its closing minutes, with the thunder ahead by 20 points. the thunder’s coach considers sending in the second-string quarterback. this would reduce the risk of the star quarterback getting injured, but the second-string quarterback is not very good. complete the passage describing the coach’s decision in economic terms.

The annual earnings of a typical investor are question options: $1,000,000 to $10,000,000. $100,000 to $500,000. $60,000 to $200,000. $40,000 to $80,000.