Answer:
C. y = 21x+90
Step-by-step explanation:
Let x be the number of hours. Each hour costs 21 dollars, so the cost of all the hours would be 21x. Then add a fixed fee of 90 to get C, y = 21x+90
Answer:
a) (x+2)^2-2
Step-by-step explanation:
write in form of x^2+2ax+a^2
2a=4
a=2
so
x^2+4x+2^2
we will now convert into the form:
x^2+2ax+a^2=(x+a)^2
substitute the values:
x^2+4x+2^2=(x+2)^2
(x+2)^2-2+2^2
(x+2)^2-2
C. Hope this helps, hope helps.
0.009 kilogram because you do 0.3 kilogram times 0.03 and you get 0.009 kilograms
Step-by-step explanation:
four times only......................
