Evaluate the expression 8^3
.(1 point)
Responses
8 x 8 x 8 = 512
8 x 8 x 8 = 512
8 x 3 = 24
8 x 3 = 24
8 + 8 + 8 = 24
8 + 8 + 8 = 24
8 x 24 = 192
8^3 = 8 x 8 x 8 = 512
Yes, I am sure. 8 raised to the power of 3 means multiplying 8 by itself 3 times, which is equal to 512.
8 + 3r; r = number of rides
are you sure
You are going to an amusement park. The admission charge is $8 plus each ride costs $3. Write an expression to represent your total cost.(1 point)
Responses
8r + 3; r = number of rides
8r + 3; r = number of rides
8 - 3r; r = cost of admission
8 - 3r; r = cost of admission
3r + 8; r = number of rides
3r + 8; r = number of rides
8r - 3; r = cost of admission
Evaluate 6x + 2y for x = 3 and y = 5.(1 point)
Responses
40
40
36
36
28
28
48
To evaluate 6x + 2y for x = 3 and y = 5, we substitute the values of x and y into the expression:
6(3) + 2(5) = 18 + 10 = 28
Therefore, the expression evaluates to 28.
One pizza costs $9 and a 2-liter of soda costs $2. The expression 9p + 2s represents the cost of buying p pizzas and s sodas. What would the total cost be for buying four pizzas and two sodas? (1 point)
Responses
The total cost would be $26.
The total cost would be $26.
The total cost would be $40.
The total cost would be $40.
The total cost would be $44.
The total cost would be $44.
The total cost would be $64.
To find the total cost for buying four pizzas and two sodas, we substitute p = 4 and s = 2 into the expression 9p + 2s:
9(4) + 2(2) = 36 + 4 = 40
Therefore, the total cost would be $40.
Choose the correct expression for “18 less than m”.(1 point)
Responses
m - 18
m - 18
m + 18
m + 18
18 + m
18 + m
18 - m