Which number line correctly shows 4.5 - 2.5? +
15
O
-10
-25 215 04 05
06 65 15 225 235 245
-45 -4 -35 -3 -25-3-1.5 -1 -0.5 005 i 15 2 25
On the number line

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.

the diagram shows you   triangle def with de=4, df=9 and de≠df≠ef.

the sum of the lengths of two triangles' sides are always greater than the length of the third side:

substitute sides lengths:

then 5< ef< 13 (option 3 is true).

def is a scalene triangle with all sides of different lengths (option 5 is true, option 2 is false).

answer: correct choices are 1, 3 and 5