X ^2 -10x+9 find the Axis of symmetry and vertex

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

You and a friend went to the movies.you spent half your money on tickets. then you spent 1/4 of the money on popcorn, $2 on candy, and $3 on a soda. if you have $1 left, hiw much money did u take to the movies?

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal