The two expressions below are equivalent.
y(2.5 + 7) + y - 2 10.5y - 2
Which statement best explains why are the expressions are equivalent?
A. The expressions have the same value for any value of y. B. The expressions have the same value for only whole number values of y.
C. The expressions have the same value only when y is an odd number. D. The expressions have the same value only when y is an even number. (THANK YOU)

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

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 position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)