Mary bought 3kg of rice at $9.90 per kg. she gave the cashier $50. how much change would she recieve

$20.30

Step-by-step explanation:

First we must find Mary's total.

3kg × $9.90/kg = $29.70

She gave the cashier $50. So we subtract the total from that to determine the amount of cash or change she should get back.

$50 - $29.70 = $20.30

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.

i’m here for points.