Solve. Give your answer as a mixed numeral.Brian was training to run a marathon. During the three-day period before the race he decided that he would train for a total of 10 hours. If he trained for 3
hours on the first day and 3
hours on the second day, how many hours would he need to train on the third day?
A. 4
hr
B. 3
hr
C. 3
hr
D. 3
hr
Answer: B
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First rewrite the quadratic function in standard form by completing the square, then find any x-intercepts and any y-intercepts.f(x) = x2 + 14x + 35
Give your answers in exact form.
A. x-intercepts: 7 - 
and 7 + 
; y-intercept: 35
B. x-intercepts: -7 - 
and -7 + 
; y-intercept: 35
C. x-intercepts: -14 - 
and -14 + 
; y-intercept: -35
D. x-intercepts: 7 + 
; y-intercept: -35
Use the two-stage method to solve.Find x1 ? 0 and x2 ? 0 such that x1 + x2 ? 50 x1 + x2 ? 25 2x1 + x2 ? 60and z = 3x1 + 4x2 is maximized.
A. x1 = 10, x2 = 40, z = 190 B. x1 = 25, x2 = 25, z = 175 C. x2 = 50, x1 = 0, z = 200 D. x1 = 50, x2 = 0, z = 150
Find the partial fraction decomposition.
A. 
- 
B. 
+ 
C. 
- 
D. 
+ 
Divide and simplify to the form a + bi.
A. - 
- 
i
B. - 
+ 
i
C. 
+ 
i
D. 
- 
i