Expand and simplify: 5(x + 4).
Correct answer(s):
- 5x + 20
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A shop charges a fixed delivery fee of 26 taka plus 6 taka for each eraser pack. If the total cost is 80 taka, how many eraser packs were ordered?
Correct answer(s):
- 9
Find x if 7x – 15 equals -29.
Correct answer(s):
- -2
For the expression 1/(n – 4), which value of n is not allowed?
Correct answer(s):
- 4
Which part of the expression 7x – 5 is the coefficient of x?
Correct answer(s):
- 7
A linear rule produces these values: x=6 gives y=20, x=-3 gives y=-7, x=0 gives y=2. Which rule matches the table?
Correct answer(s):
- y = 3x + 2
Select all expressions equivalent to 2x + 8.
Correct answer(s):
- 2(x + 4)
- 2x + 8
The sides of a rectangle are (6x + 2) cm and (4x + 2) cm. Which expression represents its area?
Correct answer(s):
- 24x^2 + 20x + 4
8 years from now, Rina’s father’s age will be 2 times Rina’s age. Rina is now 18. How old is her father now?
Correct answer(s):
- 44
Solve the proportion: 4/4 = 3/x.
Correct answer(s):
- 3
Expand: (x – 4)^2.
Correct answer(s):
- x^2 - 8x + 16
Simplify: p^7 ÷ p^4, where p ≠ 0.
Correct answer(s):
- p^3
A line has slope 1/2 and y-intercept 1. Which equation represents the line?
Correct answer(s):
- y = 1/2x + 1
Find an expression for the nth term of the arithmetic sequence: 6, 10, 14, 18, …
Correct answer(s):
- 4n + 2
Solve the inequality: -6x + 10 ≥ -32.
Correct answer(s):
- x ≤ 7
Evaluate -2x + y – 6 when x = 3 and y = -4.
Correct answer(s):
- -16
Expand and simplify: 5(8x + 2).
Correct answer(s):
- 40x + 10
A shop charges a fixed delivery fee of 20 taka plus 6 taka for each pen. If the total cost is 104 taka, how many pens were ordered?
Correct answer(s):
- 14
Solve for x: 4x – 16 = -32.
Correct answer(s):
- -4
For the expression 1/(x – -1), which value of x is not allowed?
Correct answer(s):
- -1