HELPP PLZZZ I NEED TO FIND WHAT GOES IN THE QUESTION MARK (10x^2+10x^3-9x^4)-(4x^3+?-8x^2)=-1 9x^4+6x^3+18x^2

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

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Which two transformations are applied to pentagon abcde to create a'b'c'd'e'? (4 points) translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the x-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the y-axis translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the y-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the x-axis