Ethan buys a video game on sale. If the video game usually costs $39.99, and it was on sale for 20% off. How much will Ethan save?

How much did Ethan pay for the game?

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.

What is the value of the discrimination for the quadratic equation 0=×2+2+×2

Aliter of water contains about 3.35 x 10^25 molecules. a certain river discharges about 2.9x 10^8 l of water every second. about how many molecules does the river discharge every minute? write your answer in scientific notation