Solve.The polynomial function h(x) = -16t2 + 75 describes the height of a falling object after falling t seconds from an initial height of 75 feet. What is the height after 0.5 seconds?
A. 79.0 ft
B. 73.1 ft
C. 71.0 ft
D. 67.0 ft
Answer: C
Mathematics
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Solve by the substitution method. If the system is inconsistent or dependent, say so.9x + 40 = -7y5x - 4y = 33
A. No solution B. (1, -7) C. (0, -6) D. (1, -6)
Mathematics
Use the given conditions to write an equation for the line in the indicated form.Passing through (2, 5) and perpendicular to the line whose equation is 
;slope-intercept form
A. y = - 
x + 
B. y = - 3x - 17
C. y = 
x - 
D. y = - 
x - 
Mathematics
Find the following.Find -x when x = -9.8.
A. -9.8
B. - 
C. 9.8
D. 0
Mathematics
Use the even-odd identities to find the exact value of the expression. tan 
A. 
B. -
C. - 
D. 
Mathematics