Which are valid variable names? Select 2 options. cost$

firstNumber

$cost

1stNumber

first_number

Which syntax error in programming is unlikely to be highlighted by a compiler or an interpreter? a variable name misspelling a missing space a comma in place of a period a missing closing quotation mark

Amitha writes up a one-page summary of a novel during her summer internship at a publishing company. when she reads over the page, she realizes she used the word “foreshadow” seven times, and she would like to reduce the repetition. which tool would best amitha solve this problem?

What multimedia system creates an immersive, real-life experience that the user can interact with?