I need advice. Plz dont report me. I am very stressed out. WILL MARK BRAINLIEST

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.

On a piece of paper graph f(x)=5•(0.4)^x

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?