What is the sum of the polynomials? (6x+7+x^2)+(2x^2-3)

Aparallelogram has an area of 216.24 cm2 and a height of 15.9 cm. how long is the base of the parallelogram? enter your answer as a decimal in the box. cm

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Astore ordered 750 candles a total wholesale cost of $7910.20. the soy candles cosy $12.17 each and thespecialty candles cost $9.58each. how many of each were bought?