Which of the following equations can be described as having an infinite number of solutions? (hint: use calculator)
a. 2x+4x-3=6x+4
b.5x+15=3x+20-5
c.8x-6=4(2x-1)
d.10x+3=2(5x+1)+1

3.103 miles

Step-by-step explanation:

We know D = RT, where

D is distance

R is rate

T is time

Let distance of Latanya and Marta's house be "x".

THe first leg, the distance is x and rate is 12, so the time it takes is:

D = RT

T = D/R

T = x/12

Second leg is just staying in marta's house for 90 minutes, which is 1.5 hours

Third leg is when they cover same distance , x, but rate is 2.5, so time is:

T = D/R

T = x/2.5

Since the whole journey took 3 hours (12.30 - 3.30), we can simmply add them and equate to 3 and solve for x:

THus, the distance is 3.103 miles