The table gives the speeds of four horses in miles per hour at given times. Tell which horse corresponds to each situation described below.
Time 5:59 6:00 6:01 6:02 6:03
Horse 1 7 28 15 5
Horse 2 2
0 5 0
6
Horse 3
0 4 7 3 0
Horse 4 1 7 15 34 34
Table 1-9.1a
Olivia's horse grazes in a pasture and then begins to trot back toward the barn. The horse picks up speed and gallops as
fast as it can toward the barn. The horse reaches its top speed and maintains that speed all the way to the barn. Which
horse in Table 1-9.la is Olivia's?
Horse 4
c. Horse 2
b. Horse 1
d. Horse 3
a.

Ok here we go ..there are plenty of ways to solve such math problems but we will go for the smartest and easiest ..5x+2y=7  -2x+6y=9we rearrange them into the following ..by multiplying the 1st equation by 2 it becomes 10x + 4y = 14we rearrange it and so it becomes 10x = 14 - 4yas for the second equation we multiply it by 5 and rearrange it so it becomes as to the following ..-10x + 30y = 45rearranging so 10x = 30y -45now 10x equals both 14 - 4y and 30y -45so   14 - 4y = 30y -4531 = 26yy= 31/26 = 1.19 or around 1.2so by now we can calculate x easily as  -2x+6y=9so 2x = 6y -9 = 6 * 31/26 - 9 = -1.84  then x = - 0.92 or around -0.9best luck!