You've got 19 numbers. Their sum is 10(1+2+3+...+19) or

. Divide that by 19, to get
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

Answer:
Length of truck = 160 +7% of 160 = 160 +11.2 = 171.2inches
<span>1, 2, 3, 5, 6, 10, 15, 30 represent the factors of 30, the GCF. </span>