Answered

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The expression - 340 + 13x represents a submarine that began at a depth of 340 feet below sea
level and ascended at a rate of 13 feet per minute. What was the depth of the submarine after 7
minutes?
Select the correct answer below and, if necessary, fill in the answer box to complete your choice.
O A. The submarine was
feet below sea level after 7 minutes.
OB. The submarine will have reached sea level after 7 minutes.

Sagot :

kiniwih426

Answer:

A) The submarine was -249  feet below sea level after 7 minutes.

B) The submarine will have reached sea level after 26.15384615384615 minutes.

Step-by-step explanation:

x = 7 minutes

So...

Our equation will be -340 + 13 x 7 =

First, we will solve the multiplication.

13 x 7 = (10 x 7) + (3 x 7) = 70 + 21 = 91.

Then, we solve the addition. -340 + 91 = 340 - 91 = 249

So, the submarine was -249 feet below sea level after 7 minutes.

-kiniwih426

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