3. Diego measured the length of a pen to be 20 cm. The actual length of the pen is 22 cm. Which of these is closest to the percent error for Diego's measurement?
A. 2%
B. 4.5%
C. 10%
D. 9%

D

22cm—>100%
2cm—->2x100\22=9.09%

Diego’s error was 2cm Which represents 9.09% of the actual length of the pen

Look, when you want to do something like put it like x^2. x2 could mean x² or x₂. so to clear confusion, know the notation. to find the product multiply the x's and you get -8x and the y's and you get 6y. since it's all being multiplied it is just -8x6y, or answer a. although the better answer is -48xy(combining -8 and 6) because you should multiply constants whenever you can.