The solution to 5 times 1 will be what kind of number

Which is the best estimate of the product of 0.9 x 0.88? 0 0.25 0.5 1

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?

Who ever answers this will get a cookie from batman