Determine whether the equation is an identity, contradiction, or conditional equation.9x + 9x = 18x
A. Identity
B. Conditional
C. Contradiction
Answer: A
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Solve the problem. Assume all data are accurate to two significant digits unless greater accuracy is given.A company sold 9.5 million items in a two-year period. Sales increased by 700,000 the second year. How many were sold the second year?
A. 5,000,000 B. 5,100,000 C. 7,650,000 D. 4,400,000
Solve the problem.Find the average distance from a point 
in the first quadrant of the disk 
to the origin.
A. 1
B. 
C. 2
D. 
Provide an appropriate response.Solve the fractional equation, identifying excluded values if any.
x + 
x = 
A. 
B. 1
C. 1
, x ? 2
D. 
, x ? 0
Use the formula d = rt to find the value of the missing variable.d = 24 miles, t = 6 hours (Round to the nearest tenth when necessary.)
A. r = 18 mph B. r = 144 mph C. r = 0.3 mph D. r = 4 mph