1) the temperature at the end of the day was 64 degrees. the temperature had increased twice during the day, once by 8 degrees and another time by 4 degrees. which expression shows what the temperature was at the start of the day?

a. 64 - 8 - 4
b. 64 + 8 +4
c. 64 - 8 + 4
d. 78 + 5 + 7

2) which statement about the product is true?
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7.56 · 6.7

a. the product is irrational
b. the product is rational
c. the product is neither rational or irrational
d. the nature of the product cannot be determined