What value of n makes the equation true -2n + 1.8 = 3.2

Options: -0.7, -3.4, 0.7, -2.5

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula c= r/1.8 - 273, what is the temperature in celcius corresponding to r degrees rankine.

Which graph represents the function g(x) = |x + 4| + 2?

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour. what is the cyclist average rate for the round trip in miles per hour ?