Z increased by 50% and then the result decreased by 50%

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

Solve the equation for b: a= (1/2)(b)(h)