On a piano achievement test, the final score is made up of 65% performance, 30% sight reading, and 5% written theory.

John earned an average score of 75 on performance, 90 on sight reading, and 100 on written theory.

What was John's final score for the piano achievement test?

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

A. use the formula for continuous compounding with the original example: $1000 invested at 2% for 1 year. record the amount to 5 decimal places. use a calculator. b. compare it to the result using the original compound interest formula with n = 365 calculated to 5 decimal places. which has a larger value? explain.

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.