A letter that represents an unknown number is called __________. *
1 point
constant
variable
term
coefficient
In the algebraic expression -7x + 8, what are -7x and 8 called _________? *
1 point
constant
variable
term
coefficient
What is x + 5 = 15 in words? *
1 point
the sum of a number x and 5 is equal to 15
the sum of a number x, 5, and 15
the sum of a number x and 5
the sum of 5 and 15 is a number x
What is the value of the expression q - 6 for q = 9? *
1 point
3
4
5
6
Express 3z + 1 + 8z + 9 in simplest form. *
1 point
11z - 9
11z + 9
11z + 10
11z - 10
What is -3(x + y) + 5(x - y) when simplified? *
1 point
2x - 8y
2x + 8y
2x + 2y
8x - 8y
What is “4 times the quantity 2x + 5 is 12” in algebraic symbols? *
1 point
4(2x + 5) + 12
4(2x + 5) = 12
4(2x) + 5 = 12
2x + 4(5) = 12
What is 4(x - 7) + x when simplified? *
1 point
-5x - 28
5x + 28
-5x + 28
5x - 28
What is the value of 2x - y + 3z where x = 1, y = 0, and z = -2? *
1 point
-4
4
-6
6
Sarah has r red peppers and 67 green peppers. The expression that shows the number of peppers Sarah has is __________. *
1 point
75 - r
r - 67
r + 67
67 • r
A runner has an average speed of 80 meters per minute. If he runs 480 meters in the competition, how many minutes will it take him to reach the finish line? *
1 point
5 minutes
6 minutes
8 minutes
4 minutes
A football field is about 100 m long. If it takes a person 20 seconds to run its length, how fast (what speed) were they running? *
1 point
5 m/s
2 000 m/s
50 m/s
200 m/s
John decided to cycle to his friend’s house at a speed of 5km/h and the journey took 2 hours. How far did John cycle? *
1 point
5 km
10 km
5 m
10 m
If you move 50 meters in 10 seconds, what is your speed? *
1 point
500 m/s
50 m/s
5 m/s
5 km/h