Which statements are true about Keenan's equation? Check all that apply. Keenan is in his second year at his job as a grocery clerk. Last year, his hourly wage was $7. After his recent review, he now receives $3 more per hour. Keenan created an equation to figure out the difference between this year's and last year's wages. His work is shown below. He should have used subtraction. This year's wage was more than last year's. Last year's wage was more than this year's. Last year: $7 This year: $7 + $3 = d dollars Last year, he earned 3 fewer dollars per hour than this year. 7 + 3 = 10 His hourly wage increased by 3 dollars from last year.​