Which problem could be solved with the expression 4*(4+2)

a - danny ran 4 miles in the morning and 2 miles in the afternoon. he did this for 4 days. how many miles did he run?
b - bobby sold 4 baseball cards on monday. he then sold 2 more on tuesday. he sold the same amount for 2 weeks. how many did he sell?
c - suzanne makes wooden dolls. she made 2 in the morning and 2 in the afternoon. she did this for 4 days. how many dolls did she make?

a danny's problem
b bobby's problem
c suzanne's problem

Select a graph that have an equation with a < 0

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)

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)