Lydia bought a shirt at 20% off its retail price of $40. She paid 5% tax on the price after the discount. How much did Lydia paid for the shirt?

33.60

Step-by-step explanation:

First determine the discount

40 * 20%

40 *.2 =8

The discount is 8

40-8 = 32

The shirt was 32 dollars before tax

Now find the tax

32 * 5%

32*.05 =1.60

Add the tax to the sale price

32+1.60

33.60

he spend 5.1 minutes chatting with his friends

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5 1/10

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4