me need help on this

Answer:
Part A: D.) $29⁰⁰ - $4⁵⁰x = $42⁵⁰
Part B.) $3⁰⁰
Step-by-step explanation:
How I got the Answer for Part 1:
(replace the x with the number 3)
$4⁵⁰ x 3 = $13⁵⁰ + $29⁰⁰ = $42⁵⁰
How I got the Answer for Part 2:
42.50 - 29 = 13.5
13.5 / 4.5 = 3