Answer:
yes, straight line crosses through the origin. x increases and y increases.
Answer:
C 126 sq. units
Step-by-step explanation:
A = 1/2(b)(h)
A = 1/2(21)(12)
A = 1/2 × 252
A = 126 sq. units
Answer: X<Y, X>0
Because -4 is less than 0 and -4 is greater than 0
Answer:
the answer is A,
P(x) = -0.4x³+100x²-900x+500
Step-by-step explanation:
monthly cost:

monthly revenue:

profit function:


i) remove the first bracket

ii) there is a negative sign, '-' in front of the second bracket. so, change the sign of each term of the expression inside the bracket

iii) collect like terms

iv) simply the like terms
