Let n represent an unknown number. If n is double the size of 10, which equation can be used to find n? 10 + 2 = n
10 – 2 = n
10 × 2 = n
10 ÷ 2 = n

10 x 2 =n

Step-by-step explanation:

If n is double the size of 10 it would be 20. 10 x 2 = 20  which means

n= 20

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500