Which expression has a value of 13?

(12+6)÷3+3

12+(6÷3+3)

(12+6)÷(3+3)

12+6÷(3+3)

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

The weights of broilers (commercially raised chickens) are approximately normally distributed with mean 1387 grams and standard deviation 161 grams. what is the probability that a randomly selected broiler weighs more than 1,425 grams?