Roger said that there are two routes from his home to his work. His usual route is 28.3 miles long. A shortcut that he sometimes takes is 19.7 miles long. Approximately how much longer is
his usual route than the shortcut?

OA 10 miles
OB 8 miles
OC 6 miles
OD 5 miles

The answer is B. 8 miles

Step-by-step explanation:

First you take the original route length and subtract the shortcut route length from that. Next, since the problem has the key word, Approximately, we would find the closest answer to our difference.

28.3 - 19.7 = 8.6

8.6 = 8

8 miles

1 1/4 hours

step-by-step explanation:

2/4 + 2/4 + 1/4 = 5/4 or 1 1/4

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!