Answer:
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Step-by-step explanation:
Answer:
y = 2x + 150
Step-by-step explanation:
The initial value is $150, this is the y intercept as this is the amount she has at day 0.
To calculate the gradient use change in Y/change in X. the question says that there is an increase of $2 each day so the gradient is 2.
Since y = mx + c we can replace m and c for 2 and 150 to get y = 2x + 150
if the perimeter of a square is X and the perimeter of a triangle is Y
then the side of triangle is Y/3 AND OF square is X /4
YOU MUST ESTABLISH AN EQUATION SYSTEM
I) X = 4+Y
II) X/3 = 8+Y/4
Of the equation II you obtain X , THE m.c.m IS 12
4X = 96+3Y, x = 96/4+3y/4, substitute it in the equation I
96/4 +3Y / 4 = 4 +Y ⇒ 4(96/4+3Y/4) = 4( 4+Y)
96+3Y = 16 + 4Y
96-16 = 4Y- 3Y, Y = 90, NOW X = 90+ 4 = 94 AND THIS IS THE VALUE OF THE PERIMETER OF THE TRIANGLE
D. 11.75+3.299+5.31+6.27 because 11.75 rounds up to 12 and the other three round down to 3,5,and 6 because they are below .5 (hope this makes sense)