What is 7 x 6 (free brainliest- pls don't answer if zoey hasn't)

Find the arc length parameter along the given curve from the point where tequals=0 by evaluating the integral s(t)equals=integral from 0 to t startabsolutevalue bold v left parenthesis tau right parenthesis endabsolutevalue d tau∫0tv(τ) dτ. then find the length of the indicated portion of the curve r(t)equals=1010cosine tcost iplus+1010sine tsint jplus+88t k, where 0less than or equals≤tless than or equals≤startfraction pi over 3 endfraction π 3.

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Which graph corresponds to the function f(x) = x2 + 4x – 1?