Jenna has two part-time jobs. She earns $9.50 per hour babysitting for her neighbour and $12.25 per hour working at the Farmers' Market. Last weekend, she worked 4 1/2
hours babysitting and 4 hours at the market.

-Write an expression to represent Jenna's total earnings from last weekend.

-Therefore, Jenna earned a total of $________ last weekend.