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

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.