Which equation describes a parabola that opens up or down and whose vertex is at the point (h, v)?
A. y==(x-)2 + h
B. x= aly-v2-h
c. x= aty- h2 + v
D. y = a(x - 1)2 + v
PLEASE HELP ASAP

Abag has more green balls than blue balls, and there is at least one blue ball. let bb represent the number of blue balls and let gg represent the number of green balls. let's compare the expressions 2b2b and b + gb+g. which statement is correct? choose 1

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?