Solving for an Unknown

What is the measurement of angle x?

• 180 degrees

• 50 degrees

• 130 degrees

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

What is the value of "a"?

• 75°

• 65°

• 55°

• 85°

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62

If one roll of masking tape costs $1.15, how many rolls can Emma buy with $5.75?

• 1.15(5.75) = x

• 5.75x = 1.15

• 1.15x = 5.75

• x = 1.15/ 5.75

Solve the equation:
-5x = 25

• x = 20

• x = -20

• x = -5

• x = 5

4x + 7 = 23

• x = 16

• x = 4

• x = 9

• x = 12

3(x - 2) = 18

• 6.7

• 4

• 8

• -4

• none of the above

For a school assembly, 304 students are to be seated in rows with 16 students in each row. How many rows of students will be seated for the assembly? Let r be the number of rows.

• r = 304 ÷ 16

• r = 16 ⋅ 304

• 304r = 16

• r = 16 ÷ 304

• 16r = 304

Find the solution:
10 = 4x - 2

• x = 3

• x = 2

• x = -3

• x = -2