Ezra is saving money to buy a snowboard that costs $225. he already has $45 and can earn the rest by walking ten dogs. if d represents how much he earns for walking each dog, which of the following equations can be solved to find how much ezra is paid for walking each dog? a. 225 = 45d – 10 b. 225 – 45 = 10d c. 25 + 45 = 10d d. 45 = 225 – d