Robert buys a car for $8000. at the end of each year the value of the car has decreased by 10% of its value at the beginning of that year. calculate the value of the car at the end of 7 years.

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

What is the value of f(x) = 2.2 for f(-2)?

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?