brainest if right plus 50 points and 20 extra points if you get brainiest! please do part A and part B for problem 1 and also please do problem 2 if i don't get A or B on this i fail this class so please help 30 pts and brainiest

the correct answer is 5 6 and 7

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

do your own work and don"t cheat.

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!