Anna bought three shirts for $23, $20, and $16 and a sweater for $28. the sales-tax rate is 4 percent. how much did she pay all together?

($23 + $20 + $16 + $28) x 0.04

$87 x 0.04 = $3.48

$87 + $3.48 = $90.48

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10

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