Cain's bakery sold one customer 7 dozen chocolate cookies and 9 dozen oatmeal cookies for $105. the bakery also sold another customer 8 dozen chocolate cookies and 2 dozen oatmeal cookies for $62. how much do the cookies cost?

a dozen chocolate cookies cost $ and a dozen oatmeal cookies cost $
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What values of c and d make the equation true?

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0