If the world population in 2010 is 6.7 million and the rate of growth is by 1.19 percent per year, what will the estimated world population be by 2050?

I believe the world population should be 6,700,000,000

Ending Population = Beginning Population * (1 + rate)^years

Ending Population = 6,700,000,000 * (1.19)^40

Ending Population = 7,046,172,293,951

or rounded about 7,046,000,000

(About 7.046 billion)

Step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.

answer: b

step-by-step explanation: