actually look at the picture and do it correctly i need the correct answers i'll mark brainliest if you are correct

Step-by-step explanation:

You are given 15 miles Today at 2.5 hours and m miles Yesterday at 4 hours.

since m is set as the right numerator, 15 would be the left numerator as both are in units of miles.

2.5 hours corresponds to 15, so it would be 15's denominator, and also for 4 as m's denominator.

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

understand that i don't know the answers

will someone answer his question