Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(7, -8)}
B. {(-7, -7)}
C. {(-6, -8)}
D. no solution; ?
Answer: B
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Provide an appropriate response.Which of the following statements is true about the greatest integer function f(x) = int x ?I. 
int x = 1II. 
int x = -1III. 
int x does not exist.
A. I and III only B. I and II only C. II and III only D. I, II, and III
Express the number in decimal notation.4.14 × 10-4
A. 0.0000414 B. -414,000 C. 0.000414 D. 0.00414
Use the circle graph of one family's allowance for appliances in their new house to complete the exercise. Write ratios as fractions in lowest terms.
A = $421D = $405B = $1140E = $494C = $297F = $384Find the ratio of clothes dryer to microwave.
A. 
B. 
C. 
D. 
Solve the problem.John is taking a road to Calistoga. He has already driven 74.18 miles. If the entire distance to Calistoga is 105 miles, how much further must John drive?
A. 30.82 mi B. 30.92 mi C. 31.82 mi D. 40.82 mi