Add or subtract.
+ 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem. Use a calculator with an LN or a LOG key.The height in meters of girls of a certain tribe is approximated by 
where t is the girl's age in years and 
Estimate the height (to the nearest hundredth of a meter) of a girl of the tribe 4 years of age.
A. 1.12 m B. 0.52 m C. 0.77 m D. 0.96 m
Mathematics
Verify the identity.
= 
What will be an ideal response?
Mathematics
Evaluate the expression.8P4
A. 1680 B. 2 C. 4 D. 70
Mathematics
Solve the problem.Regrind, Inc. regrinds used typewriter platens. The cost per platen is $2.60. The fixed cost to run the grinding machine is $122 per day. If the company sells the reground platens for $4.60, how many must be reground daily to break even?
A. 40 platens B. 16 platens C. 61 platens D. 46 platens
Mathematics