Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Answer: A
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Write an equation that models the described quantity. Specify what each variable represents.A gambler has lost $2000 and is losing money at a rate of $600 per hour.
A. l = 600t + 2000, where l represents total lost in dollars and t represents time in hours B. l = 600t - 2000, where l represents total lost in dollars and t represents time in hours C. l = -600t - 2000, where l represents total lost in dollars and t represents time in hours D. l = -600t + 2000, where l represents total lost in dollars and t represents time in hours
Solve.A car traveled 255 miles on a trip. During 60 miles of the trip, the car traveled through the city and had gas mileage that was 9 fewer miles per gallon than the gas mileage on the highway. If the total amount of gasoline used for the trip was 7 gallons, find the gas mileage of the car on the highway.
A. 21 miles per gallon B. 30 miles per gallon C. 48 miles per gallon D. 39 miles per gallon
Decide whether the two events listed are independent.A fair die is rolled twice. E is the event that the sum of the two rolls is eight and T is the event that three appears on the first roll.
A. No B. Yes
Find all rational zeros.f(x) = 12x3 + 37x2 + 2x - 3
A. {- 3, 4, -3}
B. {- 3, -4, -3}
C. 
D. 