Please help with pre cal questions

Measures of the angle of r, 31 s (x+4) t (3x+9)

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.