Tell whether the graph of the function opens up or down.P(x) = (x + 1)2
A. down
B. up
Answer: B
Mathematics
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Solve the inequality.20x - 20 ? 4(4x - 7)
A. x ? -2 B. x ? -2 C. x < -2 D. x > -2
Mathematics
Solve.As part of a charity bike-a-thon, friends have pledged Randall certain amounts of money per each mile that he bikes. To estimate how much money he will earn for the charity, he uses the formula 
where A is the amount in dollars of pledges earned and m is the number of miles Randall rides. Graph the equation for m = 0, 20, 40, and 60.
A. 
B. 
C. 
D. 
Mathematics
Solve and check. Use the square root principle to eliminate the square.(2m - 3)2 = 49
A. 2, -5 B. 5, -2 C. 10, -4 D. no real solution
Mathematics
Find the exact value of the expression if ? = 30°. Do not use a calculator.f(?) = sin ?Find [f(?)]2.
A. 
B. 1
C. 
D. 
Mathematics