A phone sells for $245. It is now on sale for 20% off the original price. How many dollars off is the phone? A$25
B$49
C$68
D$69

B $49

Step-by-step explanation:

the answer want how much off right? then just take the 20% off × $245 =

20% = 20/100

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x