Work out the average speed of the bus during the journey give answer to 1 decimal place??

Combine like terms to make a simpler expression 3z+z

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )

The product of sin 30 degrees and sin 60 degrees is same as the product of