Precalc: vector word problem:
a channel flows from north to south at a rate of 15 mph.
a sailboat heads at an angle of 30 degrees upstream at 40 mph.
a strong wind blows towards northwest at 30 mph.

a. write each vector in component form.

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)

Plz hurry evaluate the expression a+b where a=8 and b=19

How are algebraic expressions evaluated using substitution?