Quadratics
Factor:
x2 -13x+40
(x−5)(x−8)
A room costs $80 plus $60 per hour for 7 hours. Total cost?
$500
y=−x+10
y=x+14
x=−2, y=12
√96−9x=9
x= 5/3
Solid line shaded above means what symbol?
≥
x2−9x+18=0
x=3 and 6
A car goes 330 miles on 15 gallons. How many gallons for 550 miles?
25 Gallons
Is (−3,1) a solution?
x+y=−2
−3x−y=10
No
(5n2/9)2
25n4/81
y=(x+10)2+6
(-10,6)
Solve
6x2-17x=-5
x= 1/3
x= 5/2
Robert and Jared split $810. Robert pays $80 more. How much does Robert pay?
$445
Solve
y=x−6
y=8x-69
(9,3)
Solve
2/w+1 - 1/w+4 = 0
w= -7
y=(x-2)2+ 1
(0,5)
x2+10x=15
x= -5±√40
Bee 1 does 13 flowers in 8 min. Bee 2 does 10 flowers in 5 min. Together, how long for 580 flowers?
160 Minutes
Solve:
3x-8y= -44
y- 1/4x = 5
(-4,4)
√3/18
√6/6
Find X ints
y=(x-4)2-25
(-1,0) and (9,0)
x2-2x-9=0
x= 1±√10
Stan loads a truck in 24 min. With Chris, it takes 15 min. How long does Chris take alone?
40 Minutes
What does it mean if the second equation is just the first equation multiplied by 2?
Infintely many solutions
Solve
√9x-20 = x
x = 4 and 5
Zeros of a parabola are 5 and 9. What does that mean?
The graph crosses the x-axis at x=5x=5x=5 and x=9x=9x=9.