Camila sets up a passcode on her smart phone, which allows only four-digit codes. She has heard that it's more secure if a digit is repeated in the passcode. A spy sneaks a look at Camila's smart phone and sees her fingerprints on the screen over three numbers. What is the probability the spy is able to unlock the smart phone on his first try? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

The Lincoln wheat penny was designed by Victor D. Brenner in 1909. Currently, the most valued penny is the 1909 S VDB penny. It was minted in San Francisco and only 484,000 were minted with the initials on the back. In 2015, the S VDB penny in uncirculated condition is worth $3,200. When will it be worth $15,000? (Round your answer to the nearest year.)

I'm trying to answer question number 3. The correct answer is b. 10.91. But when I'm computing, I'm getting 22.22. Please tell me what I'm doing wrong? Thanks.

Margaret owns a restaurant and she was keeping track of the total dollar sales for the weekend (Friday through Sunday). She knew that the average daily dollar sales for the restaurant was $2,425.42 and that the dollar sales were $2,978.17 on Friday, $1,599.56 on Saturday, but she forgot to write down the amount of dollar sales on Sunday. From this information, determine the dollar sales the restaurant had on Sunday. Round your answer to the nearest penny. Enter in just the number. Do not enter the dollar sign. For example: 932.23

Suppose a student got an 82 on an exam that was worth 25% of the final grade, a 75 on another exam worth 25% of the final grade, and 93 for a homework score worth 10% of the final grade. They only have the final exam left, which is worth 40% of the final grade. What score is needed on the final exam to get a 90 for a final grade?

A math course has two midterms and a final exam. Midterm 1 is worth 18% of the final grade, midterm 2 is worth 36% of the final grade, and the final exam is worth 46%. The teacher assigns grades as marks on 100. If a student recieved a mark of 78.1 on the first midterm and 72.6 on the second midterm, what mark does he need on the final exam to get a final grade of 80 in the course. Please use excel for all calculations. Give the answer to 5 decimal places.

The median annual income for workers aged 25 or older in the United States in 2014 was $48372 for an associate’s degree and $52655 for a bachelor’s degree. The annual income for adults with a bachelor’s degree is what percent greater than for adults with an associate’s degree?

Bartholomew is shooting for a B test-average in his Art History class.  The cut-off score for a B is 80%.  His first 4 test scores are as follows:  62, 49, 98, 89, ___.

Ernie wrote 10 checks last month and these were the only transactions for his checking account. According to his check register, his balance is $1884.88, but the bank statement he just received says his balance is $2117.29. If nine of Ernie's 10 checks have cleared, what is the amount of the check that hasn'tyet cleared?

Valentino's Pizzeria sells four types of pizza crust. Last week, the owner tracked the number sold of each type, and this is what he found. Type of Crust Number Sold Thin crust 339 Thick crust 232 Stuffed crust 269 Pan style 210 Based on this information, of the next  3000  pizzas he sells, how many should he expect to be pan style? Round your answer to the nearest whole number. Do not round any intermediate calculations.