When 605,000 is scientific notation, what will be the value of the decimal number?

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2