Did someone know the answer for the unit1 Geometry test?(1.9.4 Test( TST): Foundations of Geometry)( a pex) pls

I’m which figure is point g an orthocenter

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?