At daria's school 3/8 of students are left handed. if there are 320 students, how many of them are left handed

The long jump record, in feet, at a particular school can be modeled by f(x) = 19.6 + 2.5ln(x + 1) where x is the number of years since records began to be kept at the school. what is the record for the long jump 11 years after record started being kept? round your answer to the nearest tenth.

One integer is 8 times another. if the product is 72, then find the integers

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers