The table below shows the hourly temperatures, for a city in Ohio on February 10, 2012, as predicted by the weatherman at the local news station at certain times since 10 a. m.. Table

write an equation for the curve of best fit.

Predict the temperature at 7:00p. m.

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15