the fixed cost of 20 units of electricity for a month is rs 80 and the variable cost for each extra unit of electricity is rs 6.40. find the total cost function of the expenditure for the consumption of the electricity in a month. also, obtain the total expenditure when 47 units of electricity be consumed in a month.

y=mx+

ian gone lie this got me confused

step-by-step explanation:

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.