Simplify the expression.
a. 
b. 
c. 
d. 
e. 
e.
Mathematics
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Solve by graphing.The value y (in hundreds of dollars) of Juan's computer is approximated by the linear equation 
where x is the number of years since he first bought the computer. Graph the equation and use the graph to estimate the value of the computer 4 years after it was purchased. 
A. $600 B. $800 C. $920 D. $1200
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.(6
- 8)2
A. 244 + 96
B. 172 - 96
C. 116 - 96
D. 244 - 96
Mathematics
Solve by the quadratic formula. Simplify answers. Use i notation for nonreal complex numbers.x2 + 5x + 1 = 0
A. x = 
B. x = 
C. x = 
D. x = 
Mathematics
Write an equivalent expression in exponential form.log
512 = 18
A. 2512 = 9 B. 29 = 512 C. 5129 = 2 D. 92 = 512
Mathematics