Solve the problem.Police use the formula s = 
to estimate the speed s of a car in miles per hour, where d is the distance in feet that the car skidded and f is the coefficient of friction. If the coefficient of friction on a certain gravel road is 0.26 and a car skidded 330 feet, find the speed of the car, to the nearest mile per hour.
A. 278 mph
B. 2574 mph
C. 51 mph
D. 99 mph
Answer: C
Mathematics
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Solve the equation.n + 0.5n = 90
A. n = 90 B. n = 0.5 C. n = –29.5 D. n = 60 E. n = 149.5
Mathematics
Graph the line containing the point P and having slope m.P = (9, 1); m = 0 
A. 
B. 
C. 
D. 
Mathematics
Find the coordinates of the vertex of the quadratic function.f(x) = 11(x - 2)2 + 7
A. (2, 7) B. (7, -2) C. (-2, 7) D. (11, 2)
Mathematics
Write the polynomial in standard form. Then find its degree and leading coefficient.7.1y3 + 5.2x6 - 4.9 - 1.5x
A. 5.2x6 + 7.1y3 - 1.5x - 4.9, degree: 4, leading coefficient: 5.2 B. 7.1x6 + 5.2y3 - 1.5x - 4.9, degree: 6, leading coefficient: 7.1 C. 5.2x6 + 7.1y3 - 1.5x - 4.9, degree: 6, leading coefficient: 5.2 D. 7.2y3 + 5.1x6 - 4.9x - 1.5, degree: 3, leading coefficient: 7.2
Mathematics