
Let's start off by writing this with symbols. 
Follow the order of operations and start with the exponent. 
Now, solve the parentheses. 
Multiply. 
Add. 

Answer:
:) 17
Step-by-step explanation:
68 = 4 x L
68 div by 4 = 17
the length is 17
Answer:
Forced need to stretch 1414 inches = 129830.91 pounds
Step-by-step explanation:
Force ∝ Distance
F = KD where K is constant of proportionality
K = F/D = 6060/66 = 91.818182
Hence Force needed to stretch 1414 inches =
F = 6060/66 x 1414 = 129830.91 pounds
If a question has four possible answers, and you are strictly guessing regarding which of them is correct, then the chances of your choosing the correct one from the four is 1 in 4, or 0.25.