Sierra went to the store and spent $0.89 on a candy bar, $2.48 on yogurt, $4.98 on a pizza, and $2.79 on bread. If she pays with a $10 and a $5 bill, how much change will she receive?

First, let's calculate the total amount that Sierra spent:

• Candy bar: $0.89
• Yogurt: $2.48
• Pizza: $4.98
• Bread: $2.79

Now, we sum these amounts:

\[ 0.89 + 2.48 + 4.98 + 2.79 \]

Calculating step by step:

1. \(0.89 + 2.48 = 3.37\)
2. \(3.37 + 4.98 = 8.35\)
3. \(8.35 + 2.79 = 11.14\)

Thus, the total amount spent by Sierra is:

\[ 11.14 \]

Next, we find out how much money Sierra paid. She paid with a $10 bill and a $5 bill:

\[ 10 + 5 = 15 \]

Now, we calculate the change she will receive by subtracting her total spending from the amount she paid:

\[ 15 - 11.14 \]

Calculating that gives:

\[ 15 - 11.14 = 3.86 \]

Therefore, the change Sierra will receive is:

\[ \boxed{3.86} \]