The summer income of the 3,408 students at Van Buren High School last year was normally distributed with mean $1,751 and standard deviation $421. a. Approximately what percent of the students had incomes between $1,000 and $2,000? Round to the nearest percent.

b. Approximately how many students had incomes less than $800? Round to the nearest integer.

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp

Carley bought a jacket that was discounted 10% off the original price. the expression below represents the discounted price in dollars, based on x, the original price of the jacket.

The value of cos 30° is the same as which of the following?