Riley is 3 years older than his sister. which of the following expressions shows the sum of their ages if s represents riley's sister's age?

a.3s
b. s + 3
c.2(s + 3)
d.2s + 3

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

Can you me find the missing length. i attached an image.

The angle of depression from the top of the tree to the tip of the shadow is 25°. find the height of the tree to the nearest tenth. a. 16.8 feet b. 18.2 feet c. 23.4 feet d. 39.7 feet