If joe drives 30 mph 1/2 an hour and then 60 for 2 hours, then how far did he drive

135 miles

Step-by-step explanation:

∵ Distance = speed × Time,

Given,

Speed = 30 mph,

Time = hour,

Thus, distance = = 15 miles,

Now, speed = 60 mph,

time = 2 hours,

So, distance = 60 × 2= 120 miles,

Hence, the total distance covered = 15 miles + 120 miles = 135 miles.

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.