pls help me im soo confused pls show the work 1.) 4/7 + 1/3 2.) 1/2 + (-3/10) 3.) 5/12 + 23/24

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi