Someone please help me would be a HUGE help.

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Savannah had 40 iris blooms last year this year she had 15% more iris blooms how many more hours blooms did savannah have this year

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?