Write an equation for each question, please! (t = years after 1960)

1) y = - 0.54(25)

2) 0.4 = 98 - 0.54t

3) 0.6 = 2 + 0.54t

4) 98 - 0.54t = 2(2 + 0.54t)

(you asked for equations, so I think these are the equations you are looking for!)

Step-by-step explanation:

1)

(given) y = 98 - 0.54t

(plugging in years after 1960) y = - 0.54(25)

2)

(given) y = 98 - 0.54t

(changing percent to decimal) 40% = 0.4

(plugging in percentage) 0.4 = 98 - 0.54t

3)

(given) y = 2 + 0.54t

(changing percent to decimal) 60% = 0.6

(plugging in percentage) 0.6 = 2 + 0.54t

4)

(given)

(male) y = 98 - 0.54t

(female) y = 2 + 0.54t

(setting up the equation so male is 2 times the percent of female)

98 - 0.54t = 2(2 + 0.54t)