Solve the equation by using the quadratic formula.5x2 - 3x - 8 = 0
A. 
B. 
C. 
D. 
Answer: B
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Use a calculator to find the function value. Give your answer rounded to seven decimal places, if necessary.cos 164°5'
A. -0.7616616 B. -0.5808308 C. -0.9616616 D. -0.4808308
Solve the problem.The formula P = 14.7e-0.21x gives the average atmospheric pressure, P, in pounds per square inch, at an altitude x, in miles above sea level. Find the average atmospheric pressure for an altitude of 2.3 miles. Round your answer to the nearest tenth.
A. 11.0 lb/in.2 B. 8.4 lb/in.2 C. 9.1 lb/in.2 D. 7.8 lb/in.2
Find the x- and y-intercepts of f.f(x) = (x - 5)(x - 6)
A. x-intercepts: -5, -6; y-intercept: 30 B. x-intercepts: -5, -6; y-intercept: -11 C. x-intercepts: 5, 6; y-intercept: -11 D. x-intercepts: 5, 6; y-intercept: 30
Solve the linear equation.4(2z - 4) = 7(z + 5)
A. -19 B. 19 C. 51 D. 23