Kari measures thirty-eight and ninety seven hundredths kilograms. What is her mass in standard form? Please help

Could someone with number 1 and 2

Is the figure congruent? yes or no?

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)