What is the product of 3a + 5 and 2a2 + 4a – 2?

a=6a3 + 22a2 + 14a – 10
b=6a3 + 22a2 + 26a –10
c=18a3 + 10a2 + 14a – 10
d=28a3 + 14a – 10

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Acompany that manufactures and sells guitars made changes in their product range. from the start they had 20 models. then they reduced the number of models to 15. as a result, the company enjoyed a 10% increase in turnover. - how much did the stock level change? in (%)