Need help A. S.A. P Answer all the questions plz

1.A boat costs $12,050 and decreases in value by 12% per year. How much will the boat be worth after 9 years?

$33,415.60

$3,813.56

$3,355.94

$11,942.00

2.A boat costs $19,200 and decreases in value by 12% per year. How much will the boat be worth after 5 years?

$10,132.45

$33,836.96

$19,140.00

$8,916.56

3.Find the balance in the account. $1,400 principal earning 6%, compounded semi-annually, after 10 years

$29,680.00

$2,507.19

$2,528.56

$1,468,006,400.00

4. Identify the initial amount a and the growth factor b in the exponential function. A(x) = 680 • 4.3x

680, 4.3x

680, 4.3

4.3x, 680

4.3, 680

5. Find the balance in the account. $2,400 principal earning 2%, compounded annually, after 7 years

$2,756.85

$17,136.00

$2,736.00

$307,200.00

6.Find the balance in the account. $800 principal earning 7%, compounded annually, after 4 years

$3,424.00

$1,920,800.00

$1,048.64

$1,024.00

7.Suppose the population of a town is 8,200 and is growing 3% each year. a. Write an equation to model the population growth. b. Predict the population after 3 years.

y = 8,200 • 3x ; about 221,400 people

y = 8,200 • 1.03x ; about 8,960 people

y = 3 • 8,200x ; about 73,800 people

y = 8,200 • 3x ; about 8,960 people

8.Suppose a laboratory has a 38 g sample of polonium-210. The half-life of polonium-210 is about 138 days. a. How many half-lives of polonium-210 occur in 1104 days? b. How much polonium is in the sample 1104 days later?

9; 0.07 g

8; 4.75 g

8; 2,622 g

8; 0.15 g

9.Suppose the population of a town is 9,800 and is growing 2% each year. a. Write an equation to model the population growth. b. Predict the population after 7 years.

y = 9,800 • 1.02x ; about 11,257 people

y = 9,800 • 2x ; about 11,257 people

y = 9,800 • 2x ; about 1,254,400 people

y = 2 • 9,800x ; about 137,200 people

10.
Find the balance in the account. $2,500 principal earning 4%, compounded quarterly, after 4 years

$40,000.00

$2,924.65

$41,600.00

$2,931.45