Draw a picture of pattern 4 for the following pattern of squares.
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A ball is dropped from 1000 feet.
a. Write a model that tracks the height of the ball
b. Find the height of the ball after 2 secs
a. h = -16t2 + 1000
b. 936 feet
Turn into standard form:
(5x - 8)(4x +3)
20x2 - 17x -24
Factor the expression
5x+50
5(x+10)
What are the x-intercepts of the following graph?
y= (x - 7) (2x-11)
(7, 0) and (5.5, 0)
Draw pattern 4 for the pattern of squares
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A ball is thrown up at a velocity of 65 ft/s from a height of 50 feet.
a. Write a model the find the height of the ball
b. Find the height of the ball after 4 secs
a. h = -16t2 + 65t + 50
b. 54 feet
Turn into standard form:
(2x+2)(3x2+4x+5)
6x3+14x2+18x+10
Factor the expression
x2 + 9x + 20
3x(2x-9)
Find the vertex of the following quadratic function:
y = -2 (x +2) (x+8)
(-5, 18)
Write a quadratic expression of pattern P for the pattern of squares.
P2 + 2
A rock is thrown downward at 80 ft/s from the top of a 1200 ft canyon. Use a gravity model to find the height of the rock after 6 secs.
144 feet
Turn following into standard form:
(x+4)2+12
x2+8x+28
Factor the quadratic expression:
x2+12x+35
(x+5)(x+7)
Sketch the following quadratic graph
y = x2 + 9x + 20 ?
Make sure to include x-intercepts, y-intercept, and vertex.
See graph.
861
A garden is being built with 400 ft of fencing with the fencing being used for all 4 sides.
a. Write an area model for the garden in terms of the width, w.
b. Find the maximum area of the garden.
a. A = w (200 - w)
b. 10,000 square feet
Turn into standard form:
5(x+9)2 - 20
5x2 + 90x + 709
Factor the quadratic expression:
x2 - 5x - 66
y = 2(x-4)2 - 9
See graph
Write a quadratic expression for pattern P for the pattern of squares.
4P2 + 5p - 1
A ball is thrown from 80 ft at 90 ft/s upward. Without a graph, find the maximum height of the ball.
206.5625 feet.
Turn into vertex form:
2x2 + 36x + 170
2(x + 9)2 + 8
Factor the expression:
4x2 + 40x + 84
4(x+7)(x+3)
Graph the following function
y= x2 + 16x + 71
See graph