What is the percent error for a measurement of 4.0 metric tons?

Which of the following is true for the relation f(x)=2x^2+1

Which function has the domain x> -11?

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.