Rapid rescoring is for people who are in the process of applying for a mortgage or other type of major loan and, because of their low credit scores, are being denied credit or offered a high interest rate. Individuals cannot initiate rapid rescoring on their own, but a lender can do it on their behalf. The rapid rescoring service works with credit bureaus to quickly remove incorrect negative information from your report.

A key indicator of your financial fitness, your debt-to-income ratio allows financial institutions to weigh your current debt against your income. This helps lenders determine your ability to keep up with new loan payments. Your debt-to-income ratio is calculated by dividing the total sum of all your monthly obligations by your gross monthly income. According to guidelines set by Wells Fargo, a good debt-to-income ratio is 35% or less, a decent one falls into the 36% to 49% range and one that needs improvement is 50% or higher.

I would disagree with this option, as a credit analyst its my job to investigate credit and determine customer eligibility for loans etc... typically creditors do not look for a card thats been used 1 time for $15 then never used again this kind of credit is disregarded and or not taken seriously. When we look to approve a consumer we look at several factors and what that makes a large impact is how they make their payments, the balance currently on all their revolving and installments and the history of payments. if you only charge a tiny amount and pay it off its going to show no history and therefore not be a heavy influence. in fact if you can handle it it is good to sometimes charge the card near max but then pay it off super fast. yes this well temp drop score however. it will show creditor your applying for that you can handle larger amounts and that you pay them down good and fast. 
The best way to handle this is first pull your credit reports from the three major credit agencies – Experian, Equifax and TransUnion.  And this can be done free of charge once every 12-months through the site AnnualCreditReport.com. Go through each of the reports as thoroughly as possible looking for any inaccuracies, like – incorrect information on collections, judgments, balances, new accounts, and payment history.
Next, estimate your monthly spending habits for other expenses such as gas, groceries and entertainment. Create a limit, based on your income, of what you can spend in each of the different categories of expenses. For example, if you tend to spend $400 a month on groceries, try to stick to $300 a month on groceries by making changes like buying generic brands, using coupons, and resisting impulse purchases.