What is the value of a-3c​

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

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?