Solve.The time T necessary to make an enlargement of a photo negative varies directly as the area A of the enlargement. If 147 seconds are required to make a 3-by-7 enlargement, find the time required for a 5-by-10 enlargement.
A. 300 sec
B. 400 sec
C. 350 sec
D. 450 sec
Answer: C
Mathematics
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Solve the problem.Sue and Bob have each saved money during every year from 2000 to 2005. The following bar graph shows the amounts saved each of those years.
In what years did Bob save more than the previous year, but Sue save less than the previous year?
A. 2001 and 2004 B. 2002 and 2004 C. 2001 and 2005 D. 2004 and 2005
Mathematics
Evaluate the given function.f(x) = 3x, f(-4)
A. 12
B. - 
C. 
D. 
Mathematics
Evaluate the expression without a calculator. Hint: Change decimals to fractions.
Mathematics
Use a graphing utility to construct a table of values for the function. Round your answer to two decimal places.
?
?
A. ?
| x | -2 | -1 | 0 | 1 | 2 |
| f(x) | 2.13 | 2.25 | 2.50 | 3.00 | 4.00 |
B. ?
| x | -2 | -1 | 0 | 1 | 2 |
| f(x) | 2.13 | 2.25 | -2.50 | 3.00 | 4.00 |
C. ??
| x | -2 | -1 | 0 | 1 | 2 |
| f(x) | 2.13 | -2.25 | 2.50 | 3.00 | 4.00 |
D. ??
| x | -2 | -1 | 0 | 1 | 2 |
| f(x) | 2.13 | 2.25 | 2.50 | -3.00 | -4.00 |
E. ?
| x | -2 | -1 | 0 | 1 | 2 |
| f(x) | -2.13 | 2.25 | 2.50 | 3.00 | 4.00 |
Mathematics