Determine all values that cause the expression to be undefined.
A. -28
B. 4, -7
C. 0
D. -4 , 7
Answer: D
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Use the intermediate value property to determine whether 
for some value of x on the specified interval.f(x) = x2 - 5, 2 ? x ? 3
A. No B. Yes
Land on a small Caribbean island is valued at $45 per square foot. What is the value of a triangular lot with sides of lengths 80 ft, 50 ft, and 120 ft?
(a) $65,358 (b) $216,000 (c) $108,358 (d) $55,000 (e) $45,358
Solve the system by substitution. If the system is inconsistent or dependent, say so.
A. (-5, -4) B. (-4, -5) C. (4, -4) D. empty set solution; inconsistent system
Solve the problem.Mardi received an inheritance of $70,000. She invested part at 10% and deposited the remainder in tax-free bonds at 9%. Her total annual income from the investments was $6600. Find the amount invested at 10%.
A. $15,000 B. $30,000 C. $63,400 D. $29,000