Solve and give interval notation for the solution set. Then graph the solution set.5x < 20 or x + 2 ? 9
A. (-?, 7]
B. (-?, 4) ? [7, ?)
C. (4, ?)
D. (-?, -7] ? (4, ?)
Answer: B
Mathematics
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Find the potential function f for the field F.F = 2xex2+y2i + 2yex2+y2j
A. f(x, y, z) = ex2 + ey2 + C
B. f(x, y, z) = 
+ C
C. f(x, y, z) = ex2+y2 + C
D. f(x, y, z) = 2ex2+y2 + C
Mathematics
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
Mathematics
Use the bar graph to answer the question.The bar graph below shows the number of students by major in the College of Arts and Sciences.
How many students are majoring in History?
A. 300 students B. 400 students C. 350 students D. 250 students
Mathematics
Solve the radical equation. Check all proposed solutions.
= y + 2
A. y = 7 B. y = 3 C. y = -5 D. y = 5
Mathematics