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

in a triangle TRY measure angle R is 3 times measure angle T and measure angle Y is 15 more than measure angle T find the measure of each angle

A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 39 households from the city, which gave the mean water usage to be 3410.30 gallons over a one-month period.

Suppose you draw a card from the set of cards, record the letter, return the card to the set, and shuffle the cards. You can repeat this experiment 22 times.

Write 0.000320 in scientific notation.

1. Consider a student loan of $17,500 at a fixed APR of 12 % for 20 years. What is the monthly payment? 2. Consider a student loan of $25,000 at a fixed APR of 6 % for 15 years. What is the monthly payment? 3.

5/4+x=3/4 how do I figure this out

An restaurant bill before tax is $15.50. If the sales tax is 8% and a 15% tip is added, what is the total cost of the meal?

What is the degree of the monomial 13x^5y^8?

Simplify 3³ * 3² A. 3 to the 6 power B. 3 C. 3 to the 8 power D. 3 to the 5 power

Evelyn says that ⅗ is equivalent to 9/15. Anna says that ⅗ is equivalent to 15/25. Who is correct? How do you know?