A hiker begins on top of a mountain that stands 12,500 feet above sea level. He walks down to the valley that is 250 feet below sea level. What is the difference in elevation between the mountain top and the valley?

What is the inverse operation of add 18

If ef = 19 and fg = 12 then ef = ?

Elmer is on a Ferris wheel which has a diameter of 180 ft and whose center is 120 ft off the ground. Find all of the angles θ such that 0≤θ≤3π and such that Elmer's carriage is at a height of 165 ft when it makes an angle of θ with the horizontal.

4 students is 20% of 20 students is it correct

What is tha answer to 3 2/5 = ?/5

Curtis charges a flat fee of $2.50 for each delivery plus $0.20 per mile for each mile he drives. For one delivery, Curtis drives 6 miles. How much does Curtis charge to deliver the food?

Y=5x+20 Y=-7x-16 Solve each system by substitution

what kind of growth model (pattern) is showen in the table x 1, 2, 3, 4, 5 y 5, 25, 125,635,3,125

The sum of three numbers is 16. The sum of the first number and the second number is 2 more than the third number. The second number minus the sum of the first number and third number is twice the third number.

Devon Price is a clerk typist. His annual salary is 18,720. What is his biweekly salary?