Selena purchased some gifts for her nieces and nephews online. She bought 3 dolls each priced at $19.99 each and 4 remote control cars priced at $21.99 each. Selena was able to get an online coupon for $3 off on each remote
control car that she purchased. There was no sales tax, but the shipping charge was $10.50. What was the total
amount Selena paid for her online purchase?
a $135.93
b. $144.93
$146.43
d $155.43

C . $146.43

Step-by-step explanation:

lets use variables

dolls = d

remote cars = r

3 * 19.99 = $59.97

4 * 21.99 = $ 87.96

since there was a discount for each car bought, deduct from total cost

$87.96 - 4*3 = $75.96

now add the cost of the dolls and cars as well as the shipping cost :

59.97 + 75.96 + 10.5

= $ 146.43

ab will be equal to

x^3-4x^2+3x-2/x^2+1

step-by-step explanation:

factor the numerator and denominator and cancel the common factors