Writing Two Step Equations
Twice a number divided by two is 22
2x ÷ 2 = 22
6x + 18 - 2w - 10
4w + 8
30x + 24y
6(5x + 4y)
Mary deposited $8,000 into a savings account 6 years ago. The simple interest rate is 5%. How much money did Mary earn in interest?
$2,400
When two lines cross each other, it's called...
Vertical angle
Sixteen more than seven times a number is 5
7x + 16 = 5
5(x + 3) + 6(x - 4)
11x - 9
-4x - 24
-4(x + 6)
If the simple interest on $8,000 for 6 years is $1,920, then what is the interest rate?
4%
When the meauserement adds up to 180 degrees
Supplementary
Nineteen less than eight times a number is -10
8x - 19 = -10
5(x + 12) - 3 (7 - 4x)
17x + 39
9x + 6y + 33
3(3x + 2y + 11)
A new bank customer with $6,000 wants to open a money market account. The bank is offering a simple interest rate of 2.2%. How much interest will the customer earn in 15 years?
$1,980
When the sum of two angles is equal to 90 degress
Complementary angles
Six times the sum of a number and 18 is 30
6(x + 18) = 30
5(x + 3) + (6x - 4)
11x + 11
24x + 12y + 18
6(4x + 2y + 3)
Emilio borrows $1,200 from a bank with 8% intertes per year. How much will he have to pay back total in 2 years?
$1,392
What angle measures less than 90 degrees?
Acute angle
An orchard contains 132 trees which are either apple of pear trees. There are 24 apple trees in each of 4 rows.
p = 132 - (24 x 4)
3(6b + 11) + 8(2b - 5)
34b - 7
56b + 32
8(7b + 4)
At what rate of simple interest will $5,000 amount to $6,050 in 3 years, 4 months?
6.3%
x° + 59° + 76° = 180°
45°