Given the sequence 12, 9, 6, 3, where x = 0, 1, 2, what is the function rule? f(x) = −3
f(x) = −3x + 12
f(x) = 3x + 15
f(x) = 12
Please give explanation and 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.

Arectangle has a width of 9 units and length of 40 units. what is the length of a diognal. a. 31 unitsb. 39 unitsc. 41 units d. 49 units

Anyone know? will mark brainliest if correct!