Answer:
the expected number in the bass population is 140
Step-by-step explanation:
to solve the proportion [tex]\frac{7}{20} = \frac{x}{400}[/tex], we would cross multiply
so we would multiply 7 × 400 which is equal to 2800
then we would multiply 20 × x which gives us 20x
20x = 2800 < divide both sides by 20 to isolate x
20x/20 = x
2800/20 = 140
x = 140
the expected number in the bass population is 140
