6A Review

What is the product? 125.4 x 0.032

• 4.0128

• 40.128

• 401.28

• 4012.8

What is the least common multiple of 12 and 15?

• 30

• 60

• 180

What is the value of the expression below? 3 [2 (3²+2)] − 3²

• 107

• 57

• 32

• 39

John's age is four years less than thrice Peter's age. Which expression represents John's age?

• 3j - 4, where j represents John's age

• 4 - 3j, where j represents John's age

• 4 - 3p, where p represents Peter's age

• 3p - 4, where p represents Peter's age

Two towns are each at a vertical distance of 9 feet from sea level. John argues that the two towns must be at the same elevation in feet. Is he correct? Why or why not?

• He is correct. The only number to have an absolute value of 9 is -9, so there is only one possible elevation for the towns.

• He is not correct. Both 9 and -9 have an absolute value of 9, so there are two possible elevations for the towns.

• He is correct. The only number to have an absolute value of 9 is 9, so there is only one possible elevation for the towns.

• He is not correct. Any multiple of 9 has an absolute value of 9, so there are many possible elevations for the towns.

Select the expressions that are equivalent to 45 + 60.

• 5(9 + 12)

• 3(15 + 20)

• 6(7 + 10)

• 30(1 + 2)

A diver was 60 ft below the sea level. The diver swam upwards for 50 seconds at a rate of 0.8 ft/s. Select all the true statements.

• The diver's depth is now -640 feet.

• The diver swam up 24 feet.

• The diver's depth is now -24 feet.

• The diver swam down -600 feet

• The diver swam up 40 feet.

Use the properties of operations to determine which expressions are equivalent to 3(5b + 7). Select all answers that apply.

• 15b + 7

• 15b + 21

• 10b + 21 + 5b

• 3(5b + 7 + 1)

• 2(7.5b + 10.5)

• Step 1
• Step 3
• Step 4
• Step 2
• multiply the numerators
• take the reciprocal of the second fraction
• multiply the denominators