A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given.A = ?r2; r = 2, ? = 3.14
A. 5.14
B. 19.72
C. 6.28
D. 12.56
Answer: D
Mathematics
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Find the slope-intercept form of the equation of the line with the given properties.Horizontal; containing the point 
A. y = - 
B. y = 0
C. y = 7
D. y = -7
Mathematics
Use the slope-intercept form to graph the equation.y = - 
x
A. 
B. 
C. 
D. 
Mathematics
Classify the equation as a contradiction, an identity, or a conditional equation.12k + 89 = 3(4k + 29)
A. Identity B. Conditional C. Contradiction
Mathematics
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
During which two hour period did the temperature increase the most?
A. 10 a.m. to 11 a.m. B. 12 p.m. to 2 p.m. C. 10 a.m. to 12 p.m. D. 9 a.m. to 11 a.m.
Mathematics