Chapter 7 - Copy

Solving Equations

100

4x - 17 = 31    

x = 12

200

t/9 -7 = -5

t = 18

300

2(n - 7) + 3 = 9

n = 10

400

7/8 h - 5/8 = 2

h = 3

500

1. The amount of money first deposited into a savings account is called the _________________________.

principal

Solving Inequalities

100

2x +2 < 8

x <3

200

-6x <12

x > -2

300

-7x +2x > 18-3

x<-3

400

1. The principal plus the interest is the ___________________ of the account.

Balance

500

1. When you count by 1s from an integer, you are counting ___________________.

consecutive integers

Transforming

100

Solve for c

g = cst

c = g/(st)

200

Solve for n

R= 6n + 4n

n = (R-4p)/6

300

Find three consecutive integers with a sum of -15

-6, -5, -4

400

Find two consecutive integers with a sum of 33

16, 17

500

_____________________ is paid only on the principal of an account

simple interest

Interest

100

Find the simple interest

$900 deposited at an interest rate of 3% for 5 years

I = $135.00

200

Find the simple interest

$674 deposited at an interest rate of 5% for 18 months.

I = $50.55

300

Find the balance

$400 at 7% compounded annually for 3 years

B = $490.02

400

Find the balance

$1,200 at 4% compounded semi-annually for 2 years

B = $1,298.92

500

1. A bank pays __________________________ when it pays interest on the principal and on the interest, an account has earned.

compound interest