Solve the problem.Let H(x) = 5x2 - 10x. Find x such that (x, -5) is on the graph of H(x).
A. x = -1
B. x = 1
C. no solution
D. x = ±1
Answer: B
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Solve the problem.Determine whether (1, 4, -2) is a solution of the systemx + y + z = 3 x - y + 4z = -114x + y + z = 6
A. No B. Yes
The problem that follows refers to triangle ABC.
?
If 
and 
km, find C and c.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
A. 
km
B. 
? km
C. 
? km
D. ?
km
E. 
? km
Solve the problem.After being struck with a hammer, a gong vibrates 60 vibrations in the first second and in each second thereafter makes 
as many vibrations as in the previous second. Find how many vibrations the gong makes before it stops vibrating.
A. 360 vibrations B. 370 vibrations C. 67 vibrations D. 72 vibrations
Give three kinds of notation for the percent.1%
A. 
; 1 × 
; 1 × 0.01
B. 
; 1 × 
; 1 × 0.1
C. 
; 1 × 
; 1 × 0.01
D. 
; 1 × 
; 1 × 0.001