Barry read for 15 more minutes than robert.

the letter v represents the number of minutes that robert read.
which expression shows the number of minutes barry read?

a.
15v

b.
v ÷ 15

c.
v + 15

d.
v – 15

Can someone answer these problems for me

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?