Me! 20points!

simplify: 9(a + b) + 4(3a + 2b)
a) 13a 13b
b) 21a + 17b
c) 21a + 2b
d) 38ab

Ineed in figuring out this problem.

Which sentence uses an objective tone? we will plant the best garden of any school in the area. the new campus garden will surely be envied by other schools. a garden would provide numerous benefits to the students. you will probably agree that gardens have many benefits.

Taina went to the toy store and spent $21.05 on a board game, $2.75 on coloring books, and $13.22 on a model airplane. about how much money did taina spend in the toy store?