Answer:To find out how much Therese paid in all, we need to calculate the total cost of the black pens and the ruler.- 5 black pens at 7.25 each: \( 5 \times 7.25 = 36.25 \)- 1 ruler at 8.25: \( 8.25 \)Now, add the cost of the pens and the ruler together: \( 36.25 + 8.25 = 44.50 \)Therese paid **44.50** in all.