Last week bananas costed 0.79 per pound this week they cost 0.89 per pound (need the percent change)

  12.7% increase

Step-by-step explanation:

The percentage change can be found from ...

  (change)/(original) × 100%

  (0.89 -0.79)/(0.79) × 100% = 10/79 × 100% ≈ 12.7% . . . increase

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.

yes. we do proportions in probabilities.