Answer:
a.) 35
b.) 4
c.) 27
Explanation:
A.)
Whenever two logarithms with the same base (in this example, 2) are added, you multiply the two arguments/powers (5 and 7) to get 35.
B.)
Whenever two logarithms with the same base are subtracted, you divide the first argument/power by the second one, creating 7/4.
C.)
Whenever you multiply a logarithm with a constant, you just put the argument/constant with an exponent of the constant. 3^3 would get you 27.
Hope this helps.