THEA THEA Math 3 โ Questions and Answers
Question 1: A car travels 270 miles in 4.5 hours. What is its average speed in miles per hour?
- 55 mph
- 60 mph (Correct answer)
- 65 mph
- 70 mph
Correct answer: 60 mph
Speed = distance รท time = 270 รท 4.5 = 60 mph.
Question 2: If f(x) = xยฒ โ 3x + 1, what is f(โ2)?
- 11 (Correct answer)
- 3
- โ1
- โ9
Correct answer: 11
f(โ2) = (โ2)ยฒ โ 3(โ2) + 1 = 4 + 6 + 1 = 11.
Question 3: A rectangle has a perimeter of 54 cm. If the length is twice the width, what is the width?
- 6 cm
- 9 cm (Correct answer)
- 12 cm
- 18 cm
Correct answer: 9 cm
2(l + w) = 54 and l = 2w, so 2(3w) = 54 โ w = 9 cm.
Question 4: Evaluate: โ144 + ยณโ27
- 15 (Correct answer)
- 21
- 18
- 12
Correct answer: 15
โ144 = 12 and ยณโ27 = 3, so 12 + 3 = 15.
Question 5: Which inequality is represented by the statement 'x is at most 7'?
- x > 7
- x < 7
- x โฅ 7
- x โค 7 (Correct answer)
Correct answer: x โค 7
'At most 7' means x cannot exceed 7, which is x โค 7.
Question 6: A circle has a radius of 6 inches. What is its circumference? (Use ฯ โ 3.14)
- 18.84 in
- 28.26 in
- 37.68 in (Correct answer)
- 113.04 in
Correct answer: 37.68 in
C = 2ฯr = 2 ร 3.14 ร 6 = 37.68 inches.
Question 7: What is 15% of 240?
- 30
- 36 (Correct answer)
- 40
- 45
Correct answer: 36
15% of 240 = 0.15 ร 240 = 36.
THEA THEA Math 3
A car travels 270 miles in 4.5 hours.
What is its average speed in miles per hour?