Barbara has some dimes and quarters. If she has 29 coins worth a total of $3.95. how many of each type of coin does she have

The correct answer should be 22 Dimes and 7 Quarters!

Step-by-step explanation:

22 dimes = $2.20

7 quarters = $1.75

$2.20 + $1.75 = $3.95

you expect the world population to be 8624777459 billions of people in 2030.

Step-by-step explanation:

it is increasing by about 1.1% per year. If it remains constant, then the growth rate is exponential. The population is an exponential function of time because it is dependent on time. We would apply the formula for exponential growth which is expressed as

A = P(1 + r)^t

Where

A represents the population after t years.

t represents the number of years.

P represents the initial population.

r represents rate of growth.

From the information given,

P = 7.4 × 10^9

r = 1.1% = 1.1/100 = 0.011

t = 2030 - 2016 = 14 years

Therefore

A = 7.4 × 10^9(1 + 0.011)^14

A = 7.4 × 10^9(1.011)^14

A = 8624777459