Answer:
$27
Step-by-step explanation:
10.80/6=1.8
1.8×15= 27
the cost is $1.80 per pound
Answer:
-3x - 7 is the furthest it can be simplified
Answer:
7
Step-by-step explanation:
Given,
h ( x ) = 1
To find : -
h ( x ) = 3x + 4
h ( 1 ) = 3 ( 1 ) + 4
= 3 + 4
h ( 1 ) = 7
Answer:
Speed of plane in still air = 135 km/h
Speed of wind = 23 km/h
Step-by-step explanation:
Given that:
Speed of plane with the wind = 158km/h
Speed of plane against the wind = 112km/h
Let,
x be the speed of plane
y be the speed of wind
According to given statement;
x+y = 158 Eqn 1
x-y = 112 Eqn 2
Adding Eqn 1 and 2

Putting x = 135 in Eqn 1
135+y = 158
y = 158-135
y = 23
Hence,
Speed of plane in still air = 135 km/h
Speed of wind = 23 km/h