Megan is taking a road trip. She travels 60 miles each hour. How far does she drive in 15 hours?(1 point)
Responses
4 hours
75 miles
45 miles
900 miles
Megan travels 60 miles each hour. In 15 hours, she would drive 60 * 15 = <<60*15=900>>900 miles. Therefore, Megan would drive 900 miles in 15 hours.
Multiply 21⋅(−7)(1 point)
Responses
13
−147
−3
147
21⋅(−7) = -147. Thus, the correct answer is -147.
Connect the model −(25+25+25) to the algorithm for solving the multiplication problem it models.(1 point)
Responses
The model represents 3⋅(−25), which is solved by multiplying 3 times 25 and changing the sign to get −75.
The model represents −3⋅25, which is solved by multiplying 3 times 25 and changing the sign to get −75.
The model represents −3⋅(−25), which is solved by multiplying 3 times 25 to get 75.
The model represents 3⋅(−25), which is solved by multiplying 3 times 25 to get 75.
The model represents −3⋅(−25), which is solved by multiplying 3 times 25 to get 75. Thus, the correct answer is: The model represents −3⋅(−25), which is solved by multiplying 3 times 25 to get 75.
Connect the model −4+−4+−4+−4+−4+−4 to the algorithm for solving the multiplication problem it models.(1 point)
Responses
The model represents 6⋅(−4), which is solved by multiplying 6 times 4 and changing the sign to get −24.
The model represents −6⋅4, which is solved by multiplying 6 times 4 and changing the sign to get −24.
The model represents −4⋅6, which is solved by multiplying 4 times 6 and changing the sign to get −24.
The model represents 4⋅(−6) which is solved by multiplying 4 times 6 and changing the sign to get −24.