Miko’s restaurant bill was $16. she used the expression 1.18(16) to find the total cost, including an 18% tip. which expression is equivalent to the amount miko paid? (1+0.18)16 (16+0.18)16 16 + 1.18 1+0.18(16)

Restaurant bill amount excluding tip = $16.

Tip is 18% of the billed amount.

18% can be written in decimal form as 0.18.

18% of 16 = 0.18 × 16.

Total amount including tip amount = 16 + 0.18 × 16.

Factoring out 16, we get

16(1+0.18).

We can see we get same expression in first option.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.