Question

Kendra’s age is half the age of Justin. Kendra is 13 years old. Which of the following equations represents Justin’s age, a

?(1 point)
Responses

1/2a = 13
Start Fraction 1 over 2 End Fraction a equals 13

13a = 2
13 a equals 2

2a = 13
2 a equals 13

a + 1/2 = 13

Answer 1

[AI-generated answer — Bot GPT 3.5]

The correct equation to represent Justin's age, a, would be: 2a = 13.

Answer 2

Cooper will volunteer at a community food bank for two weeks. He will work 3.5 hours every day. Which equation represents the total number of hours, h

, Cooper will volunteer at the community food bank? (1 point)
Responses

h/14 = 3.5
Start Fraction h over 14 End Fraction equals 3.5

h/3.5 = 2
Start Fraction h over 3.5 End Fraction equals 2

h/2 = 3.5
Start Fraction h over 2 End Fraction equals 3.5

3.5h = 14

Answer 3

[AI-generated answer — Bot GPT 3.5]

The correct equation to represent the total number of hours, h, Cooper will volunteer at the community food bank would be: 3.5h = 14.

Answer 4

Vicky bought 3 1/2 pounds of oranges. Each pound costs $3.90. Which of the following equations represents the total cost, c , Vicky paid for the oranges and the amount of money she spent?(1 point)

Responses

3.90c=3.5; Vicky paid $0.90.
3.90 c equals 3.5 ; Vicky paid $0.90.

c/3.90=3.5; Vicky paid $1.11.
Start Fraction c over 3.90 End Fraction equals 3.5 ; Vicky paid $1.11.

3.90/3.5=c; Vicky paid $13.65.
Start Fraction 3.90 over 3.5 End Fraction equals c ; Vicky paid $13.65.

c/3.5=3.90; Vicky paid $13.65.

Answer 5

[AI-generated answer — Bot GPT 3.5]

The correct equation to represent the total cost, c, Vicky paid for the oranges would be: c/3.5 = 3.90.

Answer 6

A culture of a certain bacteria doubles every hour. At 9:00 a.m, there were already 120 bacteria. Which equation represents the number of bacteria, n , at 8:00 a.m? How many bacteria were there?(1 point)

Responses

2n=120; at 8:00 a.m., there were 240 bacteria.
2 n equals 120 ; at 8:00 a.m., there were 240 bacteria.

n/2=120; at 8:00 a.m., there were 240 bacteria.
Start Fraction n over 2 End Fraction equals 120 ; at 8:00 a.m., there were 240 bacteria.

2n=120; at 8:00 a.m., there were 60 bacteria.
2 n equals 120 ; at 8:00 a.m., there were 60 bacteria.

n/2=120; at 8:00 a.m., there were 60 bacteria.

Answer 7

[AI-generated answer — Bot GPT 3.5]

The correct equation to represent the number of bacteria, n, at 8:00 a.m. would be: 2n = 120. At 8:00 a.m., there were 60 bacteria.

Answer 8

A survey is conducted in a certain neighborhood to find out residents’ favorite vacation spot. Two-fifths of the respondents, or 80 residents, said they like spending their vacation at the beach. Which equation represents the number of residents, r , surveyed? How many residents were surveyed?(1 point)

Responses

5/2r=80; 200 residents were surveyed.
Start Fraction 5 over 2 End Fraction r equals 80 ; 200 residents were surveyed.

80r=25; 200 residents were surveyed.
80 r equals Start Fraction 2 over 5 End Fraction ; 200 residents were surveyed.

2/5r=80; 200 residents were surveyed.
Start Fraction 2 over 5 End Fraction r equals 80 ; 200 residents were surveyed.

2/5r=80; 32 residents were surveyed.

Answer 9

[AI-generated answer — Bot GPT 3.5]

The correct equation to represent the number of residents, r, surveyed would be: (2/5)r = 80. 200 residents were surveyed.