Question

Ms Lim bought x pencils and two more pens than pencils. (b) Each pencil costs 60 cents and each pen costs $2. Write down, in terms of x, the total cost in dollars of the pencils and pens which Ms Lim bought​

Answer 1

($2.60x + $4 = TC(x)

Step-by-step explanation:'

The number of pens bought would be x + 2, where x is the number of pencils bought. Then:

Total cost = ($0.60/pencil)x + ($2/pen)(x + 2) = ($2.60x + $4 = TC(x)

Answer 2

0.60x + ((x+2)(2)) = total cost

Explanation:

The pencils = 60 cents

0.60x = (0.60, the money, multiplied by x number of pencils)

The pens = 2 dollars

2(x+2) = (2, the money, multiplied by x number of pencils + 2 more pens)