Today only, a sofa is being sold at a 62% discount. The sale price is $311.60. What was the price yesterday?

If a and b are the measures of two first quadrant angles and sin a = 4/9 and sin b = 2/5 find sin(a+b).

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?