HELP The cost of tea varies directly with the mass. Liz bought 4.5kg of tea for $10.35. What is the cost of 12kg of tea?

Step-by-step explanation:

Let m represent the mass of the tea

Let c represent its cost

The cost of tea varies directly with the mass is written as

where k is the constant of proportionality

when m = 4.5kg

c = $ 10.35

Substitute the values into the above formula

10.35 = 4.5k

Divide both sides by 4.5

k = 2.3

So the formula for the problem is

when the mass is 12kg

the cost is

c = 2.3 × 12

Hope this helps you

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: