Which equation is y = 9x2 + 9x - 1 rewritten in vertex form?

a. y=9 (x + 1/2) ^2 - 13/4

b. y=9 (x + 1/2) ^2 - 1

c. y=9 (x + 1/2) ^2 + 5/4

d. y=9 (x + 1/2) ^2 - 5/4

What's the quickest way to find the limit of an equation?

In ΔQRS, r = 510 cm, ∠S=5° and ∠Q=15°. Find the area of ΔQRS, to the nearest centimeter.

How to simplify mixed fraction like 6 15/9

A bag contains 40 marbles, 4 of which are blue, 10 are red, 25 are green, and 1 is purple. Shawna takes a marble out of the bag, records the color, and returns it to the bag. How many green marbles should she expect after 400 trials? 25 40 100 250

The formula P=0.01A^2 + 0.05A + 107 models a woman's normal systolic blood pressure, P, at age A. Use this formula to find the age, to the nearest year, of a woman whose normal systolic blood pressure is 140mm hg.

Is 15cm and 7cm a trangle

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What is 3822 devided by 39

Which of the following expressions are equivalent to x - (-x) + y A. 0+y B. y C. None of the above

In the function y=5x-35, the output is - 25. Whats the input