I need help with this problem. please help

Directions: Solve each system by substitution.

(-1, -6)

x= -1

y= -6

Step-by-step explanation:

2x + 3(6x) = -20

2x + 18x = -20

20x = -20

x= -1

y= 6(-1)

y= -6

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles