Answer:
<u>1)</u> y = - 0.54(25)
<u>2)</u> 0.4 = 98 - 0.54t
<u>3)</u> 0.6 = 2 + 0.54t
<u>4)</u> 98 - 0.54t = 2(2 + 0.54t)
(you asked for equations, so I <em>think </em>these are the equations you are looking for!)
Step-by-step explanation:
1)
<em>(given)</em> y = 98 - 0.54t
<em>(plugging in years after 1960)</em> y = - 0.54(25)
2)
<em>(given)</em> y = 98 - 0.54t
(changing percent to decimal) 40% = 0.4
(plugging in percentage) 0.4 = 98 - 0.54t
3)
<em>(given)</em> y = 2 + 0.54t
(changing percent to decimal) 60% = 0.6
(plugging in percentage) 0.6 = 2 + 0.54t
4)
<em>(given)</em>
<em>(male)</em> y = 98 - 0.54t
<em>(female)</em> y = 2 + 0.54t
<em>(setting up the equation so male is 2 times the percent of female)</em>
98 - 0.54t = 2(2 + 0.54t)
