Find the best buy (based on cost per unit).Brand X: 8 oz. for $2.00Brand Y: 20 oz. for $3.80Brand Z: 24 oz. for $5.28
A. Not enough information
B. Brand Y
C. Brand Z
D. Brand X
Answer: B
Mathematics
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Evaluate each expression without using a calculator. Give the result in degrees.sin-1 
A. 60° B. 45° C. 135° D. 120°
Mathematics
Divide, if possible. Write the answer in simplest form.
÷ 
A. 0
B. 
C. 
D. 
Mathematics
Simplify.
A. -20 B. -4 C. 4 D. 20
Mathematics
Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 11
- 4x
A. 15
B. 11
- 4x
C. 7x
D. 7x
Mathematics