Page 822 - Algebra 1

*7. Multiple Choice Find 5C3.
(118) A 10 B 12 C 20 D 60
*8. Nutrition Teenage girls need 3 servings of dairy products per day. How many (118) combinations can a girl make from 10 different dairy products?
9. Find the LCM of (15x - 10) and (3x - 2). (57)
*10. Geometry How many straight line segments can be formed by connecting any 2 of (118) 8 points?
*11. Multi-Step A student chooses 9 stuffed animals to give to a charity. He had a total (118) of 25 stuffed animals.
a. How many combinations of 9 animals could be chosen?
b. If one stuffed animal has already been chosen, then what is the probability that
he chooses his 8 favorite animals.
*12. Find the six trigonometric ratios for ∠A.
(117)
13. Multi-Step A kite is caught in the top of a 12-foot tree and a string 20 feet (117) long is stretched out to the ground.
a. Find the distance along the ground from the base of the tree to the end of the string.
b. Find ∠A, the angle the string makes with the ground.
14. Coordinate Geometry A right triangle has coordinate A(2, 1), B(8, 9), and C(8, 1).
(117) Plot the points and find the measure of acute angle A.
15. If $9200 is borrowed for 3 years at 5% simple interest, how much money will be
(116) owed after 3 years?
16. Bonds A woman invests $20,000 in a bond that pays 6% interest compounded
(116) annually. How much interest will she earn in 5 years?
*17. Error Analysis A CD earns 4% interest compounded quarterly. A woman (116) deposits $10,000 for 20 years. Two students find the value of her account.
Which student is correct? Explain the error.
__
18. Find 10!. 19. Simplify 4 .
A
25
C 24 B
7
B
B
12
20
C b A
C
Student A
A = 10,000(1 + 0.01)80 A = 10,000(1.0180)
A = 22,167.15 $22,167.15
Student B
A = 10,000(1 + 0.04)20 A = 10,000(1.0420)
A = 21,911.23 $21,911.23
(111) 5!
(103)
y = x2 - 5
√ 3 - 2
20. Solve this system by substitution: (112)
y = 4x
.
Lesson 118 807