Sarah climbed 3,900 feet of the way up Pikes Peak and then stopped to rest. After she stops, she continues to climb at a rate of 80 feet per hour for h hours. Which expression indicates her elevation, in feet, h hours after she stops? A. 3,900 + 80 × h
B. 3,900 - 80 × h
C. (3,900 + 80) ÷ h
D. 3,900 ÷ 80 × h

Acommunity group sells 2,000 tickets for its raffle. the grand prize is a car. neil and 9 of his friends buy 10 tickets each. when the winning ticket number is announced, it is found to belong to neil's group. given this information, what is the probability that the ticket belongs to neil? a.1/5 b.1/10 c.1/200 d.1/4

Write an equation of a line in slope intercept form that is perpendicular to the line 2x -3y = 12 and passes through the point (2, 6).

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days