Carol, the band director, tracked how many minutes each saxophone player practiced last week. She found that Sven practiced for 30 minutes, Li Mihn practiced for 45 minutes, Wendy practiced for 90 minutes, Thomas practiced for 75 minutes, and
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Which expression has a value of 15, using only four 4s and any of the following: +, -, ·, :, exponents, and/or parentheses? A. 44 - (4 : 4) B. (4 · 4) - (4 + 4) C. (4 · 4) - (4 : 4) D. (4 + 4 + 4) : 4
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