Answer:
3.
Step-by-step explanation:
3(n + 4) = 21
3n + 12 = 21
3n = 21 - 12 = 9
n = 3.
Answer:
20 miles for 1 gallon.
Step-by-step explanation:
20 x 15 = 300
Answer:
**The equation is not clear, so I have provided both options**
<h3><u>Option 1</u></h3>


<u>Solution 1</u>



<u>Solution 2</u>




<h3><u>Option 2</u></h3>


<u>Solution 1</u>




<u>Solution 2</u>





Answer:
B) -7
Step-by-step explanation:
x+y
8+(-15)=8-15=-7
hope it helped. I have solved in the same paper. plz don't mind.