A savings account balance is modeled by f(x) = 2x + 10, and the interest adjustment is g(x) = x + 5.
What is the value of f(g(3))?
- A. 16
- B. 21
- C. 23
- D. 26
Show the answer
D. 26
g(3) = 3 + 5 = 8, then f(8) = 2(8) + 10 = 26.
ACT Daily Question
Past questions
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What is the solution to the inequality 2x + 3 > 11?
- A. x > 7
- B. x > 4
- C. x < 4
- D. x > 14
Show the answer
B. x > 4
Subtract 3: 2x > 8. Divide by 2: x > 4.
A speed of 30 meters per second is equivalent to how many kilometers per hour?
- A. 30
- B. 54
- C. 72
- D. 108
Show the answer
D. 108
30 m/s * (3600 s/h) / (1000 m/km) = 30 * 3.6 = 108 km/h.
A car depreciates at a rate of 1500 dollars per year. After 4 years the total depreciation is to be expressed in thousands of dollars.
What is the total depreciation in thousands of dollars?
- A. 1.5
- B. 4
- C. 6
- D. 6000
Show the answer
C. 6
Total depreciation is 1500 * 4 = 6000 dollars, which is 6 thousand dollars.
A hotel room is shaped as a rectangular prism with length 5 meters, width 4 meters, and height 3 meters.
What is the volume of the room in cubic meters?
- A. 12
- B. 60
- C. 20
- D. 94
Show the answer
B. 60
Volume is length * width * height = 5 * 4 * 3 = 60.
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