Answer:
cube rectemgular prism surface area calculator
Quadratic Functions
The vertex of the parent function y = x2 lies on the origin. It also has a domain of all real numbers and a range of [0, ∞).
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Answer:
131/50
Step-by-step explanation:
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Answer:
when expenses are greater than $433.33
Step-by-step explanation:
set up equations for each plan
let 'x' = prescription costs
Plan 1: y = 150 + .5x
Plan 2: y = 280 + .2x
150 + .5x = 280 + .2x
.5x = 130 + .2x
.3x = 130
x = 433.33
i checked my answer by graphing each equation and $433.33 is the break-even point where each plan would have the same costs but, after that, the expenses for Plan B are less
-2x + y = -3.....multiply by -2
-x + 2y = 3
-----------------
4x - 2y = 6 (result of multiplying by -2)
-x + 2y = 3
----------------add
3x = 9
x = 9/3
x = 3
-2x + y = -3
-2(3) + y = -3
-6 + y = -3
y = -3 + 6
y = 3
solution is (3,3)
