How many three-digit numbers can be formed under the following condition?
?
The leading digit cannot be zero.
?
A. 800
B. ?500
C. ?900
D. ?600
E. ?700
Answer: C
Mathematics
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Find the extreme values of the function subject to the given constraint.
A. Maximum: 36 at 
minimum: -36 at 
B. Maximum: 26 at 
minimum: 0 at 
C. Maximum: 36 at 
minimum: 0 at 
D. Maximum: 26 at 
minimum: -26 at 
Mathematics
Evaluate the expression without using a calculator.-(-42)
A. -16 B. -8 C. 8 D. 16
Mathematics
Solve the formula for the specified letter.S = 
for t2
A. t2 = 
B. t2 = 
C. t2 = 
D. t2 = 
Mathematics
For the restaurant bill, estimate the tip. Then find the exact amount of the tip. State your answers to the nearest hundredth.The restaurant bill is $28.79. Give the estimate of a 20% tip and the exact amount of a 20% tip.
A.
| Estimate: $7.50 | Exact: $7.20 |
B.
| Estimate: $3.00 | Exact: $2.88 |
C.
| Estimate: $4.50 | Exact: $4.32 |
D.
| Estimate: $6.00 | Exact: $5.76 |
Mathematics