Help please- new to this math and unsure of what Im doing.

Each galaxy contains 10^11 stars. There are about 10^11 in the universe. About how many stars are in the universe?


On a test a student wrote 2^3 x 3^2= 65.

a, What mistake did the student make?


b, What is the value of 2^3 x 3^2?

Evaluate the expression. Round estimated answer to one decimal place.

square root121 - 4 square root25 -16

Haven't you already received replies to these questions here and here? How far have you gotten with the solutions and suggestions provided there? Where are you still having trouble?

Please reply showing your work. Thank you.

Eliz.