QUADRATIC FUNCTIONS: For each of the following, a) Find the number of real roots -- find b^2-4ac: positive means 2 real roots, zero means 1 real root, negative means 0 real roots b)...

QUADRATIC FUNCTIONS: For each of the following, a) Find the number of real roots -- find b^2-4ac: positive means 2 real roots, zero means 1 real root, negative means 0 real roots b)...

y = x^2 + 2x - 8

There is enough material for 90m of fencing. Predict what dimensions will give the maximum area of the pen. Write a function to model the area. Determine the maximum possible area.

Write a function to represent the rectangular area of the enclosure. How do you know that the function is quadratic?

Write an equation for the family of quadratic functions, in factored form, with the zeros 0 and negative 8.

F(x)=(2x^2)+(3x)+4, L=3, c=-1, epsilon=0.005 Find delta>0 such that for all "x" 0<|x-c|<delta and |f(x)-L| < epsilon

A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the number of machines made. If x machines are made, then the unit cost is given...

A ball is thrown vertically upward. After "t" seconds, its height "h" (in feet) is given by the function h(t) = 60t-16t^2. What is the maximum height that the ball will reach? Don't...

Standard form like f(x)=a(x-h)2 +k.

A basketball is thrown and reaches a maximum height of 11.5 feet at a horizontal distance of 3.3 feet from the shooter. If the ball hits the board, and does not go into the net , from what height...

you can grow 4 pounds of wheat per square meter of farmland.If you grow 3600 pounds wheat on a square farm, what is the length of the farm?

The slope of the line is -1/2

a ball is thrown upward from the top of a 160-foot-high building. The ball is 192 feel above ground level after 1 second, and it reaches ground level in 5 seconds. The height above ground is a quadratic...

Carly has just hit a baseball high into the air. If the height h, in metres, of the ball is given by h = 1 + 30t – 5t2 and t is the time in seconds, will the ball hit power chords that are 50...

Graph the square root function of h(x) = -√x-1; State the domain and range.

answer in interval form

I am having a lot of problems in this section of my class. the rest of problem → "Company ABC produces widgets. They have found that the cost, c(x), of making x widgets a quadratic function...

A salesperson finds that her sales average 40 cases per store when she visits 30 stores a week. Each time she visits an additional store per week, the average sales per store decreases by 1 case....

Let f(x)=ax2+bx+c be a quadratic function with a > 0 whose graph has vertex at the point (2,5). Which of the following statements are true a. x=4 is in...

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