1. a. The number is 10.
b. The number is 17.
c. The number is 12.
d. The number is 120.
e. The number is 14.
f. The number is -2.
g. The number is 99.
h. The number is 8.
2.
|
a |
a = 11 |
b |
b = 8 |
|
c |
c = 4 |
d |
d = 150 |
|
e |
e = 15 |
f |
f = 1 |
|
g
|
g = 7 |
h
|
h = 29 |
|
i
|
i = 6 |
j
|
j = 99 |
|
k
|
k = 48 |
l
|
l = 6.5 |
|
m
|
m = 6 |
n
|
n = 2.5 |
3.
|
a |
a = 8 |
b |
b = 13 |
|
c |
c = -16 |
d |
d = -7 |
|
e |
e = 8 |
f |
f = -1 |
|
g
|
g = 5 |
h
|
h = 25 |
|
i
|
i = 4 |
j
|
j = 4 |
4.
f + 175 = 300
f = 125
The cost of the freshwater crayfish is $125.v + 25 = 60
v = 35
The cost of the DVD is $35.c + 4.5 = 7
c = 2.5
The cost of the ice cream is $2.50.s + 12 = 28
s = 16
The girl is 16 years old.c + 1250 = 5200
c = 3950
The car costs $3950.d + 3.5 + 3.1 = 9.4
d + 6.6 = 9.4
d = 2.8
The drink costs $2.80.3t + 70 = 250
3t = 180
t = 60
Each squash racket costs $60.t × 600 = 3000
t = 5
The company has 5 stores.
