Logan saves $5.50 in dimes and quarters over a week. He has 20 more dimes than quarters. Write and solve an equation to find how many quarters and dimes he saved.

Consider 6x2 + 6x + 1. which term immediately tells you that this expression is not a perfect square trinomial? justify your answer

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

In what organelle does photosynthesis take place?