1.A PHP variable name can be a PHP reserved word can contain special characters is case-sensitive can start with a letter, a digit, or two underscor 2.Pick the correct code that rounds and formats the value of a variable named $ number to 3 decimal places and stores it in a variable named \$number. formatted Question 2 options: \$number formatted = number format (\$number, 3, round) ; \$number formatted = format number ( (number, 3, round) Snumber formatted - format number (\$number, 3) ; \$number formatted - number format (\$number, 3) ; 3. After the code that follows is executed, what will the value of sunits. per store be? \$units =30 \$stores =4 Sunits.. per_ store = Sunits % \$stores Question 3 options: 2 7.5 7 0