Which of the quadratic functions is written in vertex form?

y = (x+1) (x-5)

y=2x^2+3x-5

y-4=3 (x-5)

y-7=-2 (x+3) ^2

A group of children and their parents went to an amusement park. There were a total of 40 people in the group. The tickets cost $22 for each adult and $18 for each child. They paid a total of $820 for the tickets.

How can you use diagrams and equations to solve a ratio and rate problem

I need to graph a parabola. I need to find the vertex and a couple coordinates. y=-x^2+2x-4

What is 2x x54 people with the best answer get a friend reqised

How much does it cost to fence a circular wading pool area if the pool area has a diameter of 12 feet and fencing will cost $7.00 per foot? $42 $84 $132 $264 None of the above I just would like to know how to go about how to do this.

113, 183, 479, 120, 117 What is the mean, median and mode? Make sure to label each answer. Round any decimals to the tenths place. Would mean, median or mode be the best measure to describe the data?

What is the volume of a cylinder with a height of 11.8 cm and a base with a radius of 8.3 cm, to the nearest tenth of a cubic centimeter?

Thomas earned $1,235 last week. He had $382.85 taken out in taxes and insurance. What percentage of his pay was taken out in taxes?

A=25, b=12, c=4, d=4: a + (b+c). d

What is the equation of a line in slope-intercept form with a slope of - 3/4 and a y-intercept of - 2