Liliana brought 5 pounds 7 ounces of apples to make candy apples. apples cost 13 cents per ounce. how much did sarah mom spend on apples. express your answer in dollars

11.31 $

Step-by-step explanation:

Given in question that

total apple brought to make candy apples = 5 pounds 7 ounce

since 1 pound = 16 ounce

so,    5 pounds = 5 x 16 = 80 ounces

therefore total apple brought = 80 + 7 =87 ounces

again,

cost of 1 ounce = 13 cents

so,  cost of 87 ounces = 13 x 87 = 1131 cents

now,

we know that 1 cent =  0.01 dollar

so,                   1131 cents = 0.01 x 1131 = 11.31 $

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.