The half-life of radium is 1620 years. find the constant k in the formula when the time is given in years. i am supposed to use y=ce^kt i think.

You work for a lender that requires a 20% down payment and uses the standard depth to income ratio to determine a person‘s a little eligibility for a home loan of the following choose the person that you would rate the highest on their eligibility for a home loan

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct