Use the definition to find an expression for the instantaneous velocity of an object moving with rectilinear motion according to the given function relating s (in ft) and t (in s).s = 25t - 10
A. 25x
B. 15
C. -25
D. 25
Answer: D
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Write a sentence containing scientific notation for the answer.In a particular state with a population of 5.0 × 106 people, the average citizen spends 
on housing each year. Multiply those two numbers to find the total spent on housing in the state.
A. Citizens in this particular state spend $31.05 × 1010 on housing per year. B. Citizens in this particular state spend $3.105 × 109 on housing per year. C. Citizens in this particular state spend $31.05 × 1011 on housing per year. D. Citizens in this particular state spend $3.105 × 1010 on housing per year.
Graph the system of inequalities.x + y ? 9x + y ? 1y ? 0x ? 0
A. 
B. 
C. 
D. 
Provide an appropriate response.When using the substitution or elimination method to solve a system of two equations, you end up with an equation stating 0 = 0. What does this indicate to you about the system of equations?
What will be an ideal response?
Identify the intervals where the function is changing as requested.Decreasing
A. (5, 1) B. (5, 12) C. (6, 12) D. (6, 1)