Please help me , don’t understand

C

Step-by-step explanation: Can you give me brainliest, plz?

$80

Step-by-step explanation:

If C is the original cost of the garment

Then 0.20C is the amount of the disount

C - 0.20C = 64

     0.80C = 64

             C = 64/0.80

             C = 80

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

5x+2x=49

7x=49

x=7. 35 apples