A.) (99.5 + 0.06x) + 7
B.) 1.06(99.95x) + 7
C.) 1.06(99.95x + 7)
D.) 1.06(99.95 + 7)x
Algebra House 

Steve stays at a hotel that charges $99.95 per night plus tax for the room. An 6% tax is charged to the room rate, and an additional one time, untaxed fee of $7.00 is charged by the hotel. Which of the following represents Steve's total charge, in dollars, for staying x nights?
A.) (99.5 + 0.06x) + 7 B.) 1.06(99.95x) + 7 C.) 1.06(99.95x + 7) D.) 1.06(99.95 + 7)x
Which equation will produce the narrowest parabola when graphed?
A.) y = 3x² B.) y = 0.75x² C.) y = 6x² D.) y = 0.75x²
A research assistant randomly selected 75 undergraduate students from the list of all students enrolled in the psychologydegree program at a large university. She asked each of the 75 students, “How many minutes per day do you typically spend reading?” The mean reading time in the sample was 89 minutes, and the margin of error for this estimate was 4.28 minutes. Another research assistant intends to replicate the survey and will attempt to get a smaller margin of error. Which of the following samples will most likely result in a smaller margin of error for the estimated mean time students in the psychologydegree program read per day?
A.) 40 randomly selected undergraduate psychologydegree program students B.) 40 randomly selected undergraduate students from all degree programs at the college C.) 300 randomly selected undergraduate psychologydegree program students D.) 300 randomly selected undergraduate students from all degree programs at the college
The recommended daily calcium intake for a 20yearold is 1,000 milligrams (mg). One cup of milk contains 299 mg of calcium and one cup of juice contains 261 mg of calcium. Which of the following inequalities represents the possible number of cups of milk m and cups of juice j a 20yearold could drink in a day to meet or exceed the recommended daily calcium intake from these drinks alone?
A.) 299m + 261j ≥ 1,000 B.) 299m + 261j > 1,000 C.) 299 261  +  ≥ 1,000 m j D.) 299 261  +  > 1,000 m j 
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