3. select all of the numbers that are correctly written in scientific notation.
· 42×10^5
· 1.1×10^4
· 7.0×20^4
· 6.01×10^4
· 18.0×10^3

What is the solution of the systems of equations? y=2/3x+3 x=-2

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2