Simplify the expression using order of operations. 15−7×2+23

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2