Algebraic expressions 1
John sells his comic book collection he bought for $453 at a loss of k. How much does John sell his comic book collection for. Express your answer in terms of k.
$453 - k
4a + 2a =
6a
Simon has $10 bills and $20 bills. He has x number of $10 bills and y number of $20 bills. How much money does he have? Express the answer in terms of x and y.
10x + 20y
Identify point D, workbook pg 21
D = (2.75, 1.5)
define algebraic expression
an arithmetic expression which involve an unknown value
Dimples made 18 fewer paper cranes than Chewie. If they made a total of n paper cranes, how many paper cranes did Dimples make? Express your answers in terms of n.
n - 18
17x - 12x =
5x
The entrance fee for the zoo is £p for children and £q for adults. How much would 2 adults and 3 children pay? Express your answer in terms of p and q.
3p + 2q
3d, Work book pg 23
x= 6
define variable
an unknown value
A shop has 25 cartons of milk. It sells y cartons. How many cartons of milk are left? Express your answer in terms of y.
25 - y
6 - s = 5
s=1
Evaluate 3p + 2q if p=£4 and q =£7
3(4) + 2(7)
=12 + 14
=£26
3e, workbook pg 25
x=8.5
define coefficient
number used to multiply a variable
A pair of shoes cost $x. Betty bought 3 similar pairs of shoes. How much did she pay for the 3 pairs. Expres your answer in terms of x.
$3x
solve 3h=2
h=2/3
Evaluate g/3 + 6y when g=9 and y= 1.5
9/3 + 6(1.5)
=3 + 9
=12
6a, workbook pg 31
saves $12
define terms
a single number, variable or expression
Timmy saves $p a month. He saves twice as much as Chloe.How much money does Chloe save. Express your answer in terms of p.
$(p/2)
solve m/6 = 3
m=18
Practice test 7c
m + 2y = 50
12 + 2y = 50
2y= 38
y=19
shop b = 5y = 5(19) = 95
2a, workbook page 22
2 zed = $3
3 zed = $4.50
4 zed = $6
define function
a mathematical rule that takes input and produces one out for each