What is 50% of 66? plz me i dont understand

Use the multiplier method to incrases £258 by 43%

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 ?

How many solutions does the nonlinear system of equations graphed below have?