Aphone costs $499. there was a discount of 25% off. how much do the phone costs now?

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Use your knowledge of the binary number system to write each binary number as a decimal number. a) 1001 base 2= base 10 b) 1101 base 2 = base 10