Susan bought 2 3/4 pounds of potato salad at $5.60 a pound. how much did she spend?

$15.40

Step-by-step explanation:

first, let's find the 3/4. to find this, just multiply the decimal form, .75 by the price per pound because then we get the amount for 3/4 pound. that number is $4.20. next, we need to find the 2 pounds by multiplying the price per pound by the 2 pounds, which gets us $11.20. add those together and you get $15.40.