Edward wrote this expression to describe how much he paid for boxes of popcorn at the movie.

2 × c

which situation could be described by this expression?

a.
edward knows that each box costs $2. he knows that he is buying 2 boxes of popcorn.

b.
edward knows that each box of popcorn costs $2. he does not know much money he spent.

c.
edward knows he bought 2 boxes of popcorn. he does not know how much each box cost.

d.
edward knows that he bought 2 boxes of popcorn. he does not know the number of friends he will share the popcorn with.

What is the product? (x2+3y+7) [yy+1)

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

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)