Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. a) Show that the ratios 10/20 and 30/60 form a proportion by finding a common multiplier.

b)Show that the ratios in part (a) are equal by writing them in the simplest form.

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Which of the following is the graph of y= square root -x-3