Replace□is each of the following by the correct number a)2/7=8/□ b)3/5=□/30​

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day

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