HELP ASAP What are the coordinates of the y-intercept of the following linear function? y = – 2x – 8 A (0, -8) B (-8, 0) C (0, -4) D (-4, 0)

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

What is the range? can’t seem to find it out

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.