Question

Which of these can be used to determine the number of calories in a banana?

Answer 1

2(50)+5

"twice a number" means to multiply the number by 2 giving: 2×n or 2⋅n or 2n. Then, "five more than" means to add 5 to what follows or: 2n+5.

So if "n" is 50 it would be 2(50)+5