Answer:
area= x^2+8x+7
Step-by-step explanation:
a=l*w
l=x+7
w=x+1
a=(x+7)(x+1)
a= x^2+8x+7
Answer:
Step-by-step explanation:
3n + 5.6?
I don't fully understand what you're asking.
Let, the price of jacket before tax = x
it would be: x*105/100 = 118.65
x = 11865/105
x = $113
Step-by-step explanation:
Total numbers of pizza toppings = 12
Number of three topping pizzas can be ordered are:

where = n = number of elements
k = number of elements choosen
n= 12 , k = 3

We calculated the number of permutations. We made this choice because in permutation order of element matters but in combination its not.