Use two calculators tables to solve the equation. 6( x + 1 ) = 7x - 9
A) x = 16
B) x = 15
C) x = 17
D) x = 14
E) x = 13
B) x = 15
Mathematics
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Solve the problem.What is the maximum number of DVDs costing $18 each that a person can buy with $170? How much change will the person receive?
A. 10; $8 B. 9; $8 C. 8; $8 D. 9; $9
Mathematics
The general term of a sequence is given. Find the indicated partial sum. an = 
; S4
A. 
B. 
C. - 
D. - 
Mathematics
Solve the problem using Snell's Law: 
= 
.A light beam traveling through air makes an angle of incidence of 47° upon a second medium. The refracted beam makes an angle of refraction of 33°. What is the index of refraction of the material of the second medium? Give the answer to two decimal places.
A. 0.54 B. 1.34 C. 0.73 D. 0.74
Mathematics
Evaluate -(-x) for the given value of x.x = -58
A. -58
B. 0
C. - 
D. 58
Mathematics