Y = 2x – 2
2y = 4x - 4

X and Y are both 2.

Step-by-step explanation: Using substitution, replace the y coefficient with the first equation. Then solve for x and substitute it for the x in the first problem.

a and c

step-by-step explanation:

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.