Use interval notation to represent all values of x satisfying the given conditions.y = 6 - 2(2 - x) and y is at most 18.
A. [8, ?)
B. (-?, 8)
C. (-?, 9]
D. (-?, 8]
Answer: D
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Find the LCM of the set of numbers.6, 8, 10, 12
A. 120 B. 90 C. 60 D. 108
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 3895 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 $1.28 per gallon.
A. 6111.7 gallons B. 6119.1 gallons C. 6124 gallons D. 6115 gallons
Solve the problem.Hi-Tech UnWater begins a cable TV advertising campaign in Miami to market a new water. The percentage of the target market that buys water is estimated by the function 
t represents the number of days of the campaign. After how long will 90% of the target market have bought the water?
A. 120 days B. 90 days C. 115 days D. 3 days
Find the derivative.y = eex
A. eex + 1 B. ex + e C. e D. eex