7. the students in ms. chang's class decide to
order water bottles that advertise the walkathon.
maliik obtains two different quotes for the costs
of the bottles.
fill it up charges $4 per bottle.
bottles by bob charges $25 plus $3 per bottle.
a. for each company, write an equation maliik co
use to calculate the cost for any number
of bottles.
b. on the same set of axes, graph both equations from part a. which variable is the independent variable? dependent?

Remmi wrote the equation of the line y=⅓(x+2) he solved for x and got x=3y-2 which of the following is an equivalent equation for x? a.x=y-11/3 b.x=y+7/3 c.x=3(y-⅔) d.x=3(y+⅔)

1foot = 12 inches; 1 yard = 3 feet

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy