Write the set using set-builder notation.{16, 17, 18, 19}
A. {x?x is an integer less than 20}
B. {16, 17, 18, 19}
C. {x?x is a natural number between 15 and 20}
D. {x?x is a natural number between 16 and 19}
Answer: C
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Solve the problem.The cost to rent a power-wash machine from the hardware store depends on the number of hours the machine is rented. The ordered pair 
indicates that it costs $52 to rent the machine for 2 hours, and the ordered pair 
indicates that it costs $208 to rent it for 8 hours.a) Write a linear equation giving the cost, y, in terms of the number of hours x.b) Use the equation found in part a to find how much it costs to rent for 11 hours.c) How many hours could you rent for a cost of $598?
A. y = 25x; $275; 22 hours B. y = 26x; $286; 23 hours C. y = 28x; $308; 23 hours D. y = 27x; $297; 24 hours
Use the frequency table below to answer the following question(s).
If the median of the data set is 6, then x satisfies
A. 3 ? x < 6 B. 0 ? x < 3 C. 12 ? x D. 9 ? x < 12 E. 6 ? x < 9
9a/13 + 6ab/13 + 4a/13 =
a. (a + 6ab)/13 b. (9a + 6ab + 4a)/13 c. (13a + 6ab)/13 d. 19ab/13 e. 19a3b/13
Write the phrase as a mathematical expression. Use x as the variable.Some number minus 140
A. 140 B. x + 140 C. 140x D. x - 140