Solve the equation. If the solutions involve square roots, give both the exact solutions and the approximate solutions to three decimal places.
= 
A. No solution
B. 2, -6
C. 0, 36
D. 0, - 3
Answer: B
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Show that the set has cardinal number ?0 by establishing a one-to-one correspondence between the natural numbers and the given set. Be sure to indicate the general correspondence.{1, 5, 9, 13, 17, ...}
A.
| 1, | 2, | 3, | 4, 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
B.
| 1, | 2, | 3, | 4, 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
C.
| 1, | 2, | 3, | 4, 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
D.
| 1, | 2, | 3, | 4, 5, ..., n, ... |
| ? | ? | ? | ? | ? ? |
Multiply.0.53 × 1000
A. 0.53 B. 530 C. 5300 D. 53
Solve the problem.The weekly sales in thousands of items of a product has a seasonal sales record approximated by 
(t is time in weeks with 
referring to the first week in the year). During which week(s) will the sales equal 75,530 items?
A. week 21 and week 30 B. week 4, week 20, and week 52 C. week 4 and week 47 D. week 30 and week 47
Make an approximate conversion as indicated. Round to the nearest tenth. The precise value of your approximation will depend on the conversion path that you choose.25 ft = ____ m
A. 22.8 m B. 82.0 m C. 8.3 m D. 7.5 m