Factor the expression completely. : 30x² - 11x - 30
(a) (9x + 7)(5x - 6)
(b) (6x + 5)(5x - 6)
(c) (9x - 7)(7x + 9)
(d) (6x + 5)(7x - 9)
(e) (9x + 7)(7x - 9)
(b) (6x + 5)(5x - 6)
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Multiply.(5.3a + 6b)(5.3a - 6b)
A. 28.09a - 36b B. 28.09a2 + 31.8ab - 6b C. 28.09a2 + 31.8ab - 36b2 D. 28.09a2 - 36b2
Solve the inequality. Write the solution set in interval notation.
- 9 > 13
A. (-?, -3) ? (23, ?) B. (-?, -23) ? (3, ?) C. (-23, 21) D. (-?, -23) ? (21, ?)
Find the indicated term of the sequence.an = 5n2(12n - 96); a6
A. -5400 B. -4320 C. 30,240 D. 31,320
Solve the problem.Given is a graph of a portion of the postage function, which depicts the cost (in cents) of mailing a letter, p, versus the weight (in ounces) of the letter, x. What is the postage for a letter weighing 
Is the postage function continuous?
A. 55 cents; 55 cents; 77 cents; yes B. 33 cents; 55 cents; 77 cents; no C. 55 cents; 77 cents; 77 cents; no D. 55 cents; 55 cents; 77 cents; no