Expressions and Formulas

1.

(1/2)[32 + (40(mc001-2.jpg42))]
a.
–824
b.
219
c.
–1648
d.
15

2.

14 – 180 division 5
a.
–22
b.
–33.2
c.
–4.9
d.
–161

3.

(1/2)[20 + (80(-39))]
a.
–3100
b.
–1550
c.
204
d.
30.5

4.

Evaluate the given expression if w = 17, x = 29, y = 48, and z = 8.
w + (1/x) + (1/y) + (1/z)

a.
17.18
b.
8.11
c.
94.13
d.
46.15

5.

Evaluate the given expression if x = 25, y = 10, w = 11, and z = 18.
(x – y)2 + 10wz

a.
1995
b.
3205
c.
–1755
d.
2205

6.

Find the value of (a/bn) if n = 4, b = 4, and a = 40,000.

a.
156.25
b.
1562.5
c.
2500
d.
10,000

7.

Find the value of  yn if x = 1000, = 10, and n = 4.

a.
mc007-3.jpg9000
b.
900
c.
990
d.
9000

Answers (highlight below)

  1. A Solve the innermost parentheses and the angular brackets and then divide by 2. 2. 
  2. A First, divide and then subtract the result from 14.
  3. B Solve the innermost parentheses and the angular brackets and then divide by 2.
  4. A Evaluate the expression by replacing each variable with the corresponding number and then applying the order of operations.
  5. D Evaluate the expression by replacing each variable with the corresponding number and then applying the order of operations.
  6. A Find the value of 4 raised to the power of 4. Then, divide a with the value obtained.
  7. A Substitute the values of x, y, and n in the given equation to obtain the value of the given equation.

(source)