# 2A Quiz

ID: jurov-roluz Nicole Thomas, BP BY-NC
Subject: Algebra

19 questions

# 2A Quiz

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##### Section 2A Quiz - No calculator

1) Use 4 for the following number trick: Add 3. Multiply by 10. Subtract 30. What is your ending number?

2) Write an expression for the number trick. Call your starting number ﻿$x$﻿ .

Choose a number. Add 8. Multiply by 5.

3) Write an expression for the number trick. Call your starting number ﻿$x$﻿ .

Choose a number. Multiply by 3. Subtract 4.

4) Joel is 7 years younger than Annie. If Annie is 12 years old, how old is Joel?

5) Joel is 7 years younger than Annie. If Annie is ﻿$A$﻿ years old, how old is Joel?

6) There are two more students taking English than math. So there are _____ students taking English. Let x = the number of students taking math.

a)

x + 2

b)

x - 2

c)

x ﻿$\div$﻿ 2

d)

2x

7) There are half as many students taking music as math. So there are _____ students taking music. Let x = the number of students taking math.

a)

x + 2

b)

x - 2

c)

x ﻿$\div$﻿ 2

d)

2x

8) Evaluate the expression for x = -3. ﻿$\frac{x^{2}-1}{5x}$﻿

9) The number of beds needed at a shelter is described by ﻿$a$﻿+﻿$c$﻿+15, where ﻿$a$﻿ is the number of adults and ﻿$c$﻿ is the

number of children. How many beds are needed if there are 230 children and 112 adults?

10) Simplify 6﻿$x$﻿+3-4(﻿$x$﻿-5)

11) Simplify ﻿$x$﻿-8+2﻿$y$﻿+3-4﻿$x$﻿

12) Simplify 3(-2﻿$x$﻿+5)+2-4(-4﻿$x$﻿-6)

13) Consider the number trick below. Let x = the starting number. Write the result and simplify the expression.

Choose a number. Add 5. Multiply by 6. Subtract 4. Multiply by 2. Divide by 4. Then subtract 13.

14) The operation x﻿$\Delta$﻿y is defined by this rule: x﻿$\Delta$﻿y = 11x + 2y. Evaluate 5﻿$\Delta$﻿4.

15) Is -6x + (-3x) -2y equal to 3x - 2y?

a)

yes

b)

no

16) Is 5x - 4y + 2y - 2x equal to 3x - 2y?

a)

yes

b)

no

17) Is 3(x + 1) - y - y - 3equal to 3x - 2y?

a)

yes

b)

no

18) Write a simplified expression for the area of a rectangle that has a length of 8 and width of 2﻿$x$﻿+5

19) Write a simplified expression for the perimeter of a rectangle that has a length of 8 and width of 2﻿$x$﻿+5