Solve the inequality graphically.5- x < 9- x
A. x > 0
B. x < 1
C. x < 0
D. x > 1
Answer: C
Mathematics
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Solve the problem.Suppose that z varies jointly with x and y and that z = 343 when x = 7 and 
Find the constant of proportionality k. Then, find z when x = 7 and y = 8.
A. k = 2.9; z = 162.4
B. k = 33,614; z = 
C. k = 3.9; z = 218.4
D. k = 3.5; z = 196
Mathematics
Solve the equation.
= 
+ 3
A. {63}
B. {21}
C. {27}
D. 
Mathematics
y? = 2( y + x); y (1 2) = 1
Solve the initial-value problem.
Mathematics
Find the unknown value in the percent proportion 
Round to the nearest tenth, if necessary.whole = 20, percent = 30
A. part = 10 B. part = 2 C. part = 6 D. part = 150
Mathematics