Acar travels at a consistent speed of 30 mph if the driver only travel a distance of 15,840 feet , how long will it take the driver in minutes

6 minutes

Step-by-step explanation:

Start by converting the feet to miles. (15840 feet equals 3 miles)

Distance=Rate*Time

We know the Rate (30mph) and the distance (3 miles). Plug them into the equation:

3=30T

Divide both sides by 30 to get the time: [This is in hours]

T=0.1 hrs

Now multiply 0.1 by 60 to get the time in minutes!

60*0.1=6

6 minutes

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18