The greatest common factor (GCF) is the greatest factor that divides two integers.

If the tiger has consumed 18 pounds of food in 3 days that's \( \frac{18}{3} \) = 6 pounds of food per day. The tiger needs to consume 54 - 18 = 36 more pounds of food to reach 54 pounds total. At 6 pounds of food per day that's \( \frac{36}{6} \) = 6 more days.

Use PEMDAS (Parentheses, Exponents, Multipy/Divide, Add/Subtract):

2 + (4 + 2) ÷ 2 x 3 - 5²
P: 2 + (6) ÷ 2 x 3 - 5²
E: 2 + 6 ÷ 2 x 3 - 25
MD: 2 + \( \frac{6}{2} \) x 3 - 25
MD: 2 + \( \frac{18}{2} \) - 25
AS: \( \frac{4}{2} \) + \( \frac{18}{2} \) - 25
AS: \( \frac{22}{2} \) - 25
AS: \( \frac{22 - 50}{2} \)
\( \frac{-28}{2} \)
-14

A number in scientific notation has the format 0.000 x 10^exponent. To convert to scientific notation, move the decimal point to the right or the left until the number is a decimal between 1 and 10. The exponent of the 10 is the number of places you moved the decimal point and is positive if you moved the decimal point to the left and negative if you moved it to the right:

0.0009411 in scientific notation is 9.411 x 10^-4

A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.