6/2(1+2) DUDE SO HARD LOL WTEF

What is the number 321,000,000 in scientific notation? also what is the number? ?

Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?