Graph the quadratic function using its properties. Based on the graph determine the domain and range of the quadratic function.f(x) = x2 + 6x + 8
A. domain: {x|-? < x < ?}
range: {y|y ? -1}
B. domain: {x|-? < x < ?}
range: {y|y ? 1}
C. domain: {x|-? < x < ?}
range: {y|y ? 1}
D. domain: {x|-? < x < ?}
range: {y|y ? -1}
Answer: A
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Solve the problem.Ken is 6 feet tall and is walking away from a streetlight. The streetlight has its light bulb 14 feet above the ground, and Ken is walking at the rate of 1.6 feet per second. Find a function, d(t), which gives the distance Ken is from the streetlight in terms of time. Find a function, 
, which gives the length of Ken's shadow in terms of d. Then find 
.
A. (S ? d)(t) = 0.88t B. (S ? d)(t) = 1.52t C. (S ? d)(t) = 1.2t D. (S ? d)(t) = 2.7t
Translate the problem situation to a system of equations. Do not solve.The difference between two numbers is 1. Three times the smaller number plus the larger number is 85. What are the numbers?
A. x - y = 1; 3x + y = 85 B. x + y = 1; x + 3y = 85 C. x - y = 1; x + 3z = 85 D. x - y = 1; x + 3y = 85
Solve the equation.
+ 4 = 3
A. 49 B. -1 C. 1 D. No solution
Solve the problem.An organization determines that the cost per person of chartering a bus is given by the formula 
where x is the number of people in the group and C(x) is in dollars. Find the inverse of the function.
A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 