Change 5 - 2 into an addition problem using a change in sign and the additive inverse. (Step 1: change the minus sign to a plus sign. Step 2: change the second number in the

problem to its opposite (additive inverse].)

9514 1404 393

  5 + (-2)

Step-by-step explanation:

starting with: 5 - 2

step 1: 5 + ( )

step 2: 5 + (-2)

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.