Eddie has saved up $45 to purchase a new camera from the local store. the sales tax in his county is 7% of the sticker price. write an equation and solve it to determine the value of the highest priced camera eddie can purchase with his $45, including the sales tax. round your answer to the nearest penny.

a. x - 0.07x = 45; $48.39

b. 0.7x = 45; x = $64.29

c. 7x = 45; x = $6.43

d. x + 0.07x = 45; x = $42.06