help plxz!

QUESTION 17 In periods of economic growth the demand for loanable funds decreases the demand for loanable funds increases people have more money, so they borrow less interest rates reflect only expectations of the future QUESTION 18 For a given tax rate, the after-tax yield rate on an investment will be higher, provided that the tax rate is positive increases as the before-tax yield rate increases moves in a direction opposite the before-tax yield rate is equal to the before-tax yield rate, if the tax rate is not changing