Find all real numbers whose distance from 20.8 is 5.
A. -15.8 and 25.8
B. 15.8
C. 15.8 and 25.8
D. -15.8
E. 25.8
Answer: C
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Determine the component representation and magnitude of the vector having the initial point P and the terminal point Q.P(5, 1) and Q(11, 6)
A. 
, 61
B. 
, 
C. 
, 
D. 
, 61
Write the formula using the "language" of variation. A = ?r2, where A is the area of a circle of radius r.
What will be an ideal response?
Solve the problem.The number of people present at a stadium holding a big rock concert can be estimated with the following function: 
where y is the number of people present and x is the amount of time since 
on the day of the concert. Rewrite the model with x equal to the amount of time since 1.00 p.m.
A. y = 13,252(x + 2)0.74 + 0.54(x + 2) + 102
B. y = 13,252(x + 2)0.74 + 0.54x + 102
C. 
D. y = 13,252(x - 2)0.74 + 0.54x + 102
Given the function, find the indicated value.f(x) = 8x + 5; f(-13)
A. -103.5 B. -109 C. 109 D. -99