Engineer economy question. Thanks

*3 FOR THE CASH FLOW SHOWN BELOW FIND THE FOLLOWING : A THE PRESENT VALUE B) WHAT THE POSITIVE GRADIENT MUST START WITH ( INSTEAD OF 2000 ) IF IT ALONE WAS TO RAISE THE PRESENT VALUE TO PV = + $ 1,000 () WHAT THE GRADIENT PART ( NOW $ 1, 000 ) MUST BECOME IF IT ALONE WAS TO RAISE THE P. V. TO P. V. = + $ 1,000. D) WHAT THE ANNUAL COST ( NOW - 750 YEARS 2 TO 7) MUST BE REDUCED TO IF IT ALONE WAS TO RAISE THE P. V. TO PV. = +$ 1,000 . AGAIN 2000 2 3000 w- to00 MARK = 5% A O N- -4 - - a - 7 2500 0 750 750 750 750 750