Answer:

Step-by-step explanation:
Slope is rise over run.

Hope this helps.
1/5 using the slope formula
Answer:
D)
Step-by-step explanation:

90 divided by X (x is the number of friends which the question did not provide)
well, 1/7th of the cupcakes is 3. so 2/7ths makes 6. and 21 minus 6 is 15. So, your answer is 15.