HELP what are two expressions that are equivalent to -42x+84

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

What is the first step of an indirect proof of a number that is divisible by two

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle