Tegan needs to make 686868 more snow blocks to finish building an igloo. Write an equation for the number of blocks Tegan still needs to make, mmm, when she has completed ccc blocks.

We are given:

No: of blocks Tegan still needs to make = m.

No: of blocks Tegan has completed = c

Total No:of more snow blocks need to make = 68 .

Total number of more snow blocks need to make = Total number of blocks -  The number of blocks Tegan has completed.

m = 68 - c.

Therefore, the equation for the number of blocks Tegan still needs to make, m, when she has completed c blocks is

m = 68 - c.

For example.

Suppose if c = 10, it means Tegan still needs to make 68-10 = 58 block.

the correct answers i think are b. and d.

give me brainliest if it is correct!