Find in the form y=ax^2+bx+c, the equation of the quadratic whose graph: touches the x-axis at 4 and passes through (2,12)

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?