What measuring tools did ancient mathematicians have, and how do they compare to the measuring tools we have today?

What is an equation of the line that passes through the point (-2,3) and is parallel to the line whose equations is y=3/2x-4? i am stuck between y=3/2x or y=3/2x+6 : (

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

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?