Find an equation for the ellipse described.Center at (0, 0); focus at (5, 0); vertex at (8, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: B
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The double bar graph shows the mean tuitions (in dollars) charged by public and private institutions of higher education in the United States from 1999 to 2004. The public graphs are on the left. The private graphs are on the right.
Approximate the difference in tuition charges for public and private schools for 2002.
A. $13,000 B. $6,500 C. $15,900 D. $2900 E. $9,100
Solve.y + 4 = x2
+ y2 = 16
A. (
, 3), (0, -4)
B. (-
, 3), (
, 3), (0, 4)
C. (
, 3), (0, 4)
D. (-
, 3), (
, 3), (0, -4)
Solve the equation.log2(x - 1) = 3 + log2(x - 5)
A. 
B. 
C. 
D. 
Solve the inequality.In order for a chemical reaction to take place, the Fahrenheit temperature of the reagents must be at least 
. Find the Celsius temperatures at which the reaction may occur. 
Round your answer to hundredths of a degree.
A. C ? 222.48°F B. C ? 41.01°F C. C ? 41.01°F D. C < 222.48°F