Given two circles, x and y, with radii 2in and 9in respectively, the ratio of the areas is (write you answer as a fraction)

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 ?

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Find the value of the variable and the length of each chord for #5 and #6.