Can someone please help me solve this (7th grade math)

Can someone pls ! pls answer all. no explanation needed..

Aboat costs 19200 and decreases in value by 12% per year. how much will it cost in 5 years

Select 2 statements that are true about the equation y+6=-10(x-3).1) the slope of the line is -102) the slope of the line is 33) one point on the line is (3,6)4) one point on the line is (3,-6)