0.7x-y=5.16 and 2-0.8x=0.4y round to the nearest hundredth? does anyone know this answer?

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.

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9

Plot the intercepts to graph the equation