Answer:
16
Step-by-step explanation:
Whenever it says twice, it means to multiply by 2. So you take Zara's age, it being 8, and multiply it by 2 like it says to.
Here's an equation to help explain how I got this answer better.
2 * 8 = 16
6 years old
8-5=3
Which means their age difference is 3.
3×2=6
12. 5(5x+4)(5x-4)
13. 2(4v+5)(4v-5)
14. 5(3x+2)(3x-2)
7(nearest whole number)
7.2(1 decimal place)
Answer: Each avocado cost $3
Equation: 23 - 4x = 11