Which linear function is represented by the graph?
f(x) = -2x + 1
f(x) = -4x+1
f(x) = { x +1
f(x) = 2x + 1

Which one ? is the answer and how to find this answer

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points