Rob is saving to buy a new MP3 player. For every $12 he eams babysitting, he saves $6. On Saturday, Rob eared $48 babysitting. How much money did he save?

Griffin ordered a pair of sneakers online. he had a $22 credit that he applied toward the purchase, and then he used a credit card to pay for the rest of the cost. if the shoes cost $58, how much did griffin charge to his credit card when he bought the sneakers?