Describe the error in the work shown below.

Find an expression equivalent to 18 + 30.

Factors of 18: 1, 2, 3, 6, 9, 18

Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30

18 + 30 = 6 (3 + 10)

In order to pass the entrance exam a prospective student must answer 80% of the questions correctly. The exam has 30 questions what is the smallest number of questions a tester must answer correctly in order to pass the test?

What is the change in the y-values and x-values on the graph? The change in the y-values is 40 and the change in the x-values is 1. The change in the y-values is 1 and the change in the x-values is 40.

Two angles that add up to be exactly 90 degrees are said to be

To paint a sunset, Tran makes a shade of orange paint using 5 5 drops of red paint for every 8 8 drops of yellow paint. If Tran uses 15 15 drops of red paint, how many drops of yellow paint would he need?

Find all complex solutions of 2x^2+3x+6=0

Find the missing factor C that makes the equality true. 12x^5 = (4x^2) (C)

I used 8 bags of sand for 12m squared how much will I need for 15 m squared

How many cubic units is a box that is 3 units high, 3 units wide, and 2 units deep?

Martha walks 2.02 miles in the morning and 1.84 miles in the evening. How many miles does she walk each day?

If the original quantity is 4 and the new quantity is 7, what is the percent increase