Write a story using this exponential function: f(x)=400(.89)^x

Given right triangle xyz, which correctly describes the locations of the sides in relation to

Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t

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?