How many solutions do the following equation have?
u2 +64 +9=0

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Aremote-controlled boat can travel at 4 feet per second in calm water. the boat traveled 48 feet with the current, and then it traveled 16 feet against the current in the same amount of time. how fast is the current?