A parking lot began with four times as many spaces in a row as rows. After being expanded, 6 more rows were added and 12 more spaces in each row. The maximum number of spaces that the parking lot will hold is 413. If r represents the original number of rows, which of the following represents this situation?
A.
4r2 + 36r + 72 < 413

B.
4r2 < 485

C.
4r2 + 36r > 485

D.
4r2 + 72 > 413

Where is the diagram

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to