Solve.Write the area of the following rectangle as an algebraic expression and then simplify.7x4 - 3 
A. A = 3x7 - 7x3
B. A = 7x7 - 3x3
C. A = 7x4 - 3x3
D. A = 7x3 - 3x7
Answer: B
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Solve.The sum of the squares of the digits of a positive two-digit number is 61, and the tens digit is 1 more than the units digit. Find the number.
A. 45 B. 65 C. 56 D. 54
Solve the problem.The intensity of a radio signal from the radio station varies inversely as the square of the distance from the station. Suppose the the intensity is 8000 units at a distance of 2 miles. What will the intensity be at a distance of 13 miles? Round your answer to the nearest unit.
A. 189 units B. 153 units C. 172 units D. 215 units
Simplify.(
+ 
)(
- 
)
A. 3
B. 6 - 2
C. 6 - 6
D. 9
Graph the hyperbola and label all intercepts.9x2 - 16y2 = 144
A. 
(-4, 0), (4, 0)
B. 
(0, 4), (0, -4)
C. 
(0, 3), (0, -3)
D. 
(-3, 0), (3, 0)