Find all real-number square roots of the given number.4
A. ±2
B. -2
C. 2
D. ±1
Answer: A
Mathematics
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A computer password is made up of four characters. Each character can be a capital letter (A through Z), a lowercase letter (a through z) or a digit (0 through 9).How many different such computer passwords are there?
A. 462 B. 2 × 264 + 104 C. 62 × 4 D. 624 E. none of these
Mathematics
Perform the indicated operations.26 + 16 ? 24 - 28
A. 980 B. -168 C. 382 D. 38
Mathematics
Evaluate the function for the indicated value.h(x) = 
; find h(19)
A. 4 B. -34 C. -4 D. 34
Mathematics
Evaluate the function.f(x) = 4x2 + 4x + 5; Find f(-3).
A. 19 B. 2 C. 29 D. 53
Mathematics