What 3.8in nearest tenth

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

On which number line are -3 and its opposite shown

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?