What does an open circle represent and when would you use it

The number of portable CD players you are prepared to supply to a retail outlet every week is given by the formula q = 0.3p2 + 6p where p is the price it offers you. The retail outlet is currently offering you $70 per CD player.

How to put a linear equation into standard form

What x what equals - 288

What can 45/8 be simplified down to?

Jamaal has 20 models of planes and cars. He has three times as many cars as planes. What is the ratio of his cars to total models? 1:4 3:1 3:4 4:3

Can you guess this mystery author? Clue#1 He was born in England Clue#2 He was in the British Army during World War 1.

A fishing boat was out to sea for 6 months and traveled a total of 8578 milesin the first month the boat traveled 659 miles how many miles did the fishing boat travel during the remaining 5 momths

What is 3/4 + (-7/4) ?

Three consecutive integers have a sum of 45. Find the integers.

Find x in the equation x² - 7 = 4x + 5