Answer:
C.
Step-by-step explanation:
You can plug in any number for x and it will always equal each other
Well see here that it practically gives us the answer. The submarine rises 4.3 meter each minute of the first 15 minutes. Multiplying these two given numbers you get 64.5 . Great we're halfway through. Now onto the second equation. 5.2 times 12 . easy right? The answer round to 62.4 . Now all that's left to do is add the two together. After the 27 minutes the submarine should be at an elevation of 126.9 feet. rounding to 127 if you teacher requires you to round the numbers.
It's probably A (I can't tell you for certain, because I can't see the image, but the other options seem illogical).
