Evaluate.[38 - (4 + 6) ÷ 2] - [1 + 21 ÷ 3]
A. 20
B. 22
C. 25
D. 32
Answer: C
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = (3 + 2t2)i + (2t2 - 2)j + (5 - t2)k, 1 ? t ? 2
A. 27 B. 9 C. 45 D. 15
Mathematics
Graph the inequality.-2x - 4y ? 8
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A gas station sells 4820 gallons of regular unleaded gasoline in a day when they charge $1.35 per gallon, whereas they sell 3851 gallons on a day that they charge $1.40 per gallon. Find a linear function that expresses gallons sold as a function of price. Use this function to predict the number of gallons sold at a price of $1.22 per gallon.
A. 7343.5 gallons B. 7336.1 gallons C. 7339.4 gallons D. 7348.4 gallons
Mathematics
Solve the equation.28 = -21 + n
A. n = 7 B. n = -49 C. n = 49 D. n = -7
Mathematics