If lending rates that banks can charge increase, all else equal what effect, if at all, will this have on the money multiplier

The 39 percent and 38 percent tax rates both represent what is called a tax "bubble." suppose the government wanted to lower the upper threshold of the 39 percent marginal tax bracket from $335,000 to $208,000. what would the new 39 percent bubble rate have to be? (do not round intermediate calculations. enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

When a shortage or a surplus arises in the loanable funds market a. the supply of loanable funds changes to return the economy to its original real interest rate b. the nominal interest rate is pulled to the new equilibrium level c. the demand for loanable funds changes to return the economy to its original real interest rate d. the real interest rate is pulled to the new equilibrium level

Aproperty title search firm is contemplating using online software to increase its search productivity. currently an average of 40 minutes is needed to do a title search. the researcher cost is $2 per minute. clients are charged a fee of $400. company a's software would reduce the average search time by 10 minutes, at a cost of $3.50 per search. company b's software would reduce the average search time by 12 minutes at a cost of $3.60 per search. which option would have the higher productivity in terms of revenue per dollar of input?