To find the state tax you have to take 7 percent of 124.95
Then add the tax to the amount he paid then add the charges for shipping
7/100=.07
124.95x.07=8.74
8.74+124.95+10=143.69
so he paid in total $143.69
13-7 = 6 so that means 6 + 4 would make it ten
Answer:
7 pieces.
Step-by-step explanation:
7(weeks of piano lessons) times 1(how many pieces he learns per week) equals 7(number of pieces he learned).
Hope this helps.
Answer:
The vertex is (2,1)
Step-by-step explanation:
ƒ(x) = –x^2 + 4x – 3
Factor out the negative
= -(x^2 -4x+3)
Factor
What 2 numbers multiply to +3 and add to -4
-3*-1 = 3
-3+-1 = -4
f(x) = -( x-3)(x-1)
Find the zeros
0 = -( x-3)(x-1)
0 = x-3 0 = x-1
x=3 x=1
The x value of the vertex is 1/2 way between the two zeros
(3+1)/2 = 4/2 =2
To find the y value, substitute x=2 in
f(2) = -( 2-3)(2-1)
=-(-1)(1) = 1
The vertex is (2,1)