Answer:
A- 15-5 is the same
Step-by-step explanation:
15 + (3-8)
15 + (-5)
15-5
Answer:
13.75
Step-by-step explanation:
66-20- 32 1/4
66-20- 32.25
46-32.25
13.75
Andy would have to make 3 trips in order to cycle 21 kilometers.

<h2>
Explanation:</h2>
Hello! Recall you need to write complete questions in order to find exact answers. So in this problem I'll assume the question is:
<em>A number d minus 4 is less than -1</em>
<em />
So it is easy to know that we need to write an inequality here because of the words "less than", which implies that we must use the symbol <. So let's solve this step by step.
Step 1. A number d minus 4.
This statement includes the word "minus", so we need to use the symbol (-). Therefore:

Step 2. A number d minus 4 is less than
As we said above, here we need to use the symbol (<). So:

Step 3. A number d minus 4 is less than -1
Finally, we get:

<h2>Learn more:</h2>
Inequalities: brainly.com/question/9611462
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