Let d = 3.

what is the value of 5 · 6 + d · 2?

36

66

90

180

36

Step-by-step explanation:

First we substitute our value in:

5 X 6 + 3 X 2

The order of operations specifies that we do multiplication before addition so:

30 + 6

36

answer is 144

step-by-step explanation:

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