Estimate the sum or difference by rounding each number to the nearest ten.
A. 27
B. 20
C. 30
D. 120
Answer: B
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Solve.The pitch of a roof is 
. If the rise is 
feet, how far apart are the outer faces of the supporting walls?
Fill in the blank(s) with the appropriate word(s).
There were many names mentioned in this section. Give a brief description for the person named in problem, telling how they were related to the development of computers.Paul Baran
A. 1st to use term 'personal computer' B. helped build first computer C. 1st computer in the 1800s D. 1st to envision Internet E. 1st supercomputer
Solve.The daily profit in dollars of a specialty cake shop is described by the function 
where x is the number of cakes prepared in one day. The maximum profit for the company occurs at the vertex of the parabola. What is the maximum profit?
A. $140,292 B. $93,636 C. $29,241 D. $171.00
Find the quadratic function y = f(x) that has the given vertex and whose graph passes through the given point.vertex 
; passing through 
A. y = 
2 - 
B. y = 
2 + 
C. y = - 
2 + 
D. y = - 
2 - 