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)...

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

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

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

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

The slope of the line is -1/2

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...

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?

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...

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 retangular field covers 2400m^2. its lengh is 50m longer than it's width what's its with

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...

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...

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...

A projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 576t. After how many seconds does the projectile take to reach its maximum...

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

answer in interval form

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....