. A runner is standing at a distance of 4 miles from his cabin and begins running at 7.5 miles per hour. Write an equation for this case.

t = 7.5d + 4

d = t + 7.5

d = 7.5t + 4

t = d + 7.5

I'm a little confused by this problem .  I only know that the relation between d and t is d = 7.5t where t = time and d = the distance travelled.

Step-by-step explanation:

step-by-step explanation:

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.