Nancy went to the grocery store. On Monday she purchased 5 apples and 8 bananas for a total of $20. On Wednesday she purchased 10 apples and 15 bananas for a total of $37. Which system of equations represents the situation?

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.