Determine whether the table represents a proportional relationship. if a proportional relationship exists, what is the constant ratio of y/x?

a) yes; -2/3
b) yes; -5/3
c) yes; -2/5
d) the table does not represent a proportional relationship

Ineed asap.i cant understand this question i need someone to me right away

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.

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?