Help with this one 2 plzzz

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Write the equation in logarithmic form 8^x=64