Giving brainliest!! :))

Write the equation in logarithmic form e^x=403.429

Which expression is equal to (f+g)(x)?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )