plz help first one to find all the answer and has the right answer gets BRAINLIST & A THANK UAND POINTS! :D /math/ number 9 and 13 find the answers for ( -9- a, b,c, & -13- a, b,c )

Aboat's value over time is given as the function f(x) and graphed below. use a(x) = 400(b)x + 0 as the parent function. which graph shows the boat's value increasing at a rate of 25% per year?

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.