Solve the problem.The motion of a projectile that is fired at a 45° angle with the horizontal is given by x = v0
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 100 feet per second at an angle of 45° with the horizontal. Find (a) the time when it strikes the ground and (b) the range (horizontal distance covered).
A. (a) 8.8 sec
(b) 625 ft
B. (a) 4.4 sec
(b) 313 ft
C. (a) 8.8 sec
(b) 78 ft
D. (a) 2.2 sec
(b) 78 ft
Answer: B
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Provide an appropriate response.What conditions must be placed on the values of x and y so the expression 
will be equal to the expression 
+ 
?
A. y must always be negative. B. y must always be positive. C. x and y must have opposite signs or at least one be zero. D. x and y must have the same signs or at least one be zero.
Provide an appropriate response. Graph the absolute-value equation y = |x|.
A. 
B. 
C. 
D. 
Use synthetic division to find the quotient and the remainder. (x5 - 4x4 - 9x3 - 15x2 - 21x + 19) ÷ (x - 6)
A. Q(x) = x4 + 2x3 + 3x2 + 3x + 3 ; R(x) = 3 B. Q(x) = x3 + 2x2 + 3x + 3 ; R(x) = 1 C. Q(x) = x4 + 2x3 + 3x2 + 3x + 1; R(x) = 0 D. Q(x) = x4 + 2x3 + 3x2 + 3x - 3 ; R(x) = 1
Solve.To the nearest dollar, the average tuition at a public four-year college was 
in 1997 and 
in 1999. Use the ordered pairs (1997, 
) and (1999, $3250) to find and interpret the slope of the line representing the change in tuition (to the nearest dollar per year).
A. tuition increased $118 per year B. tuition decreased $101 per year C. tuition increased $112 per year D. tuition increased $101 per year