Answer the question or write an explanation.Explain how (-7x)7 and -7x7 are different.
What will be an ideal response?
In the first, the power applies to both. In the second, the power only applies to the x.
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Solve the problem.If Thursday is your starting day, what day will it be 2 years, 24 days from Thursday? (Assume no leap years.)
A. Thursday B. Friday C. Wednesday D. Tuesday
Rotate the axes so that the new equation contains no xy-term. Discuss the new equation.31x2 + 10
xy + 21y2 -144 = 0
A. ? = 45°
x'2 = -4
y'
parabola
vertex at (0, 0)
focus at (0, -
)
B. ? = 36.9°
+ 
= 1
ellipse
center at (0, 0)
major axis is x'-axis
vertices at (±3, 0)
C. ? = 45°
y'2 = -4
x'
parabola
vertex at (0, 0)
focus at (-
, 0)
D. ? = 30°
+ 
= 1
ellipse
center at (0, 0)
major axis is y'-axis
vertices at (0, ±3)
Multiply and simplify. Assume that all variables in a radicand represent positive real numbers.
? 
A. xy
B. 3x2y2
C. 3xy2
D. 3xy
The sides in the pair of figures are proportional. Find the missing length or lengths.
A. 4 B. 16 C. 8 D. 7