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Choice A, -1540 feet



Explanation:

Multiply the rate (44 ft per sec) by the number of seconds (35) to get 44*35 = 1540

The answer will be negative to indicate that the altitude has gone down. If you put in a positive change, then the altitude would go up. So that's why the answer is choice A

Note: when you multiply 44 ft/sec by 35 sec, the "second" units cancel out leaving just feet.

Another note: if you want, think of the 44 as -44 to indicate that the plane is decreasing at a rate of 44 ft/sec

The inclined end of the ramp is 5.7 in above the ground

Step-by-step explanation:

step 1

we know that

The ramp must run 10 inches horizontally for every 1 inch of rise

Applying the Pythagoras Theorem, find the hypotenuse

step 2

Using proportion find out the height of the ramp

Let

x ----> the height of the ramp