Find dy for the given values of x and dx.y = 2x - 1, x = 7, dx = 4
A. 8
B. 9
C. 10
D. 7
Answer: A
Mathematics
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = -5 + 9 cos tFind the body's velocity at time t = ?/3 sec.
A. - 
m/sec
B. 
m/sec
C. 
m/sec
D. - 
m/sec
Mathematics
Find the y intercept for the following equation: 2x - y = 1
a. 2 b. 1 c. -2 d. -1
Mathematics
Give the domain and range of the relation.
A. domain: (-5, ?); range: (5, ?) B. domain: (-?, ?); range: (-?, ?) C. domain: [-5, ?); range: (-?, ?) D. domain: (-?, ?); range: [-5, ?)
Mathematics
Solve.A projectile is thrown upward so that its distance above the ground after t seconds is 
After how many seconds does it reach its maximum height?
A. 25.5 sec B. 17 sec C. 34 sec D. 8 sec
Mathematics