PLZ HELP ASAP! if you have the solution, plz write that down as well What is the solution to the equation x - 4.3 = 2.1 ?

x = 6.4
x = 2.2
x = 9.03
x = 1.8

What is the the greatest common factor ?

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?