Hi, if you could please explain step by step, assume I suck at all math, lol, thank you!

mo. 7 The GDP ( gross dommeshe product) of the us can be modeled by the equalin f ( t ) = 92. ( 1 . 065 7 ) * where fit) was the GDP ( in billions ) Since 1930 I'm what year will the GOP reach 29, 930? . [202) ] mo. 8.The length in centimeters of a typical pacific halibut t years old is approximately - f (t) - 200 ( 1 - 6. 956 p-018t) suppose a pacific halibut caught by mary measures 140 cm. what is the approximate age ? no.9 Barometric Pressure - Halley's Law states that the havormethe pressure cim inclos of mercury, at an alltude of x miler above nea level in approximated by the equation - 0 . 2X p ( x ) = 29.92 e (X20 ) If the barometric pressure as measured by a hot- air balloonist is 20 im. of Anewvery what i the balloonist's altitude