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
13a = 2
13 a equals 2
12a = 13
Start Fraction 1 over 2 End Fraction a equals 13
a + 12 = 13
a plus Start Fraction 1 over 2 End Fraction equals 13
2a = 13
2a equals 13
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
h3.5 = 2
Start Fraction h over 3.5 End Fraction equals 2
3.5h = 14
3.5 h equals 14
h2 = 3.5
Start Fraction h over 2 End Fraction equals 3.5
h14 = 3.5
3.5h equals 14
The correct equation that represents Justin's age, a, is: 2a = 13.
To solve this problem, we can use the information given. We know that Kendra's age is half the age of Justin, and Kendra is 13 years old.
Let's use the variable "a" to represent Justin's age.
Since Kendra's age is half of Justin's age, we can set up the equation:
Kendra's age = Justin's age ÷ 2
Substituting the given values:
13 = a ÷ 2
Now, to find Justin's age, we can multiply both sides of the equation by 2 to isolate the "a" variable:
2 × 13 = 2 × (a ÷ 2)
26 = a
So, the equation that represents Justin's age is:
a = 26