Answer:
the answer is B) Zero
Step-by-step explanation:
horizontal lines always have zero as their slope no matter where they are placed on a graph
Given function:
y=9.5x+62.1
We have to find the number of minutes x, when y=138.1°F
Put value of y in function.
138.1=9.5x+62.1
Subtract 62.1 from both sides.
76=9.5x
Divide both sides by 9.5.
8=x
or
x=8 minutes
Answer: After 8 minutes the temperature of water will be 138.1°
6•40+6•5 will be the correct answer since 6x45 equals 270 and the second one equals to that so that will be your answer