bMartin Manufacturing has implemented several programs to improve its productivity. They have asked you to evaluate the firm's productivity by comparing this year's performance with last year's. The following data are available:

Last Year This Year

Output $10,50012,100$

labor hours $12,00013,200$

utilities $$7,600$ $$8,250$

capital $$83,000$ $$88,000$

a$.$ What is the percent change in labor productivity? $4\mathrm{.}55\%$

b$.$ What is the multifactor productivity for last year?

$[$ Select $]$

c$.$ What is the productivity for this year$/$

$[$ Select $]$

d$.$ What was the overall multifactor percent change?

$[$ Select $]$