Perform the indicated operation. (8-15i)+(-3+2i)

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4