If 3a- 7>14, then which of these could a be ? a. 8 b. 5 c. 1 d. -8

A) 8

Step-by-step explanation:

Plug in the optional values for "a".

3(8) - 7 = 17

17>14

Repeat with the other options and you'll see this is the only choice.

Step-by-step explanation:

3a = 7+14

3a = 21

a = 7

inequality = (7,∞)

if 7, 3a - 7 > 14 = 14 > 14 which is not possible

so its 8

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m