Please help me im a grade 9 student i dont know this topic because our teahcer didnt teach this on us and i dont know what to do here. please help me.

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

Add the fractions and simplify 1/2+ 1/3

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.