Vicki gives her children dessert 30% of the time. if her children want to know the probability that they will eat dessert 3 of the 7 days this week, which simulation design has an appropriate device and a correct trial?

a) roll a die letting 1 represent eating dessert and 2-6 represent not eating dessert. roll the die three times.
b) roll a die letting 1 represent eating dessert and 2-6 represent not eating dessert. roll the die seven times.
c) using a table of random digits select a digit between 0 and 9. let 0-2 represent eating dessert and 3-9 represent not eating dessert. select three digits.
d) using a table of random digits select a digit between 0 and 9. let 0-2 represent eating dessert and 3-9 represent not eating dessert. select seven digits.

Ineed in figuring out this problem.

At river bank, checking account customers earn 0.75% interest a month on their account balances, pay no service fees for writing checks, and pay a monthly $2.00 financial charge. calculate the income earned in one month on the checking account for a customer with an account balance of $1,000. a. $4.25 b. $5.50 c. $6.75 d. $7.25 checking account earnings at baker’s bank are expressed by the equation: i = -0.09x + 10.2. while the earnings at elite bank are modeled by: i = -0.02x + 7.5. in both cases, x is the number of checks written. at what number of checks will elite bank start generating more checking account income than baker's bank? a. 12 b. 25 c. 39 d. 42 emilio’s checking account had a balance of 728.32 at the beginning of the week. he wrote checks for the following amounts throughout the week: $99.48, $33.50, $18.23, and $72.05. he also deposited his paycheck in the amount of $1,109.90. what is his account balance at the end of the week? a. $1,192.35 b. $1,222.86 c. $1,540.52 d. $1,614.96

The formula to determine energy is e=1/2mv2? what is the formula solved for v?