Solve.x2 = 81
A. 40.5
B. -9, 9
C. -10, 10
D. 9
Answer: B
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Complete the square for the binomial. Then factor the resulting perfect square trinomial.x2 - 7x
A. x2 - 7x + 
= 
2
B. x2 - 7x - 
= 
2
C. x2 - 7x + 
= 
2
D. x2 - 7x + 49 = (x - 7)2
Find a and k and then evaluate the function. Round your answer to three decimal places when necessary.f(x) = 15 + a(3kx) with f(0) = 25 and f(6) = 105. Find f(3).
A. a = 10, k = - 
, f(3) = 25
B. a = 10, k = 
, f(3) = 45
C. a = -10, k = 3, f(3) = 45
D. a = -10, k = - 
, f(3) = 45
Solve the problem.Ellen is knitting a scarf with one 4
-inch blue stripe, one 
green stripe, and one 
white stripe. How wide is the scarf?
A. 16
in.
B. 
in.
C. 
in.
D. 4
in.
Round the whole number to the given place value.4455 to the nearest thousand
A. 4100 B. 3900 C. 5000 D. 4000