Factoring Quadratics I
(x - 3)(x + 5)
A projectile's motion is modelled by the equation:
f(x) = -0.5(x + 2)(x - 6), where x is time.
When will the projectile land on the ground?
At 6 seconds
(5x+1)2
25x2+10x+1
A projectile's motion is modelled by the equation:
f(x) = -14.7(t - 0)(t - 8)
What are the direction of opening, stretch/compression, and x-intercepts?
stretched by 14.7
x-intercepts (0, 0) and (8, 0)
(6x - 3)2
36x2 - 36x + 9
A bridge shape is modelled by the equation:
f(x) = x2 - 25, where x is measured in metres.
What is the total width of the bridge?
10 m
Factor 18x2+38x
2x(9x+19)
(4x-3)(4x+3)
16x2 - 9
A thrown rock's motion is modelled by the equation:
f(x) = -3x2 + 9x + 30, where x is seconds
When will the rock land on the ground?
At 5 seconds
(x - 1)(x + 1)
x2 - 1
NTCI team photos sell for $10 each, and the coaches find that they sell on average 30 photographs per team. The coaches do a survey and find out that for each reduction in price of $0.50, an additional two photographs will be sold. At what price will the revenue from the photographs be $150?
Price is $2.50