If a population has a birth rate of 40 individuals per 1,000 per year and a death rate of 30 individuals per 1,000 per year, how will the population change each year? (assume that the population is below carrying capacity and that there is no immigration or emigration.)a) it will decrease by 70%. b) it will increase by 1%. c) it will increase by 5%. d) it will increase by 70%. e) it will increase by 100%.

Population will increase by 1 %

So option (b) will be correct option

Step-by-step explanation:

We have given birth rate of 40 individuals per 1000 per year

So birth rate in percentage %

And rate rate of 30 individuals per 1000 er year

So death rte in  percentage %

So net change in population change per year = 4-3 = 1 %

So population will increase by 1 % per year

So option (b) will be correct answer

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500