A. Put these answers into your table :
5, 6.20, 7.40, 8.60, 9.80
B see pic
c yes there is a linear relationship between the letters and cost
D the equation is y=.60x+5
Answer:
1. He ignored 4 on the first line
2. 9 - 2x
Step-by-step explanation:
4 - 2(x + 5)
4 - 2x + 5
9 - 2x
Answer:
(-3,0)
Step-by-step explanation:
To find the x-intercept set y to 0,
x^2 + 6x + 9 = 0 Now you have a quadratic equation, so you can solve it
(x + 3)(x + 3 ) = 0
x + 3 = 0
x = -3
4^3*4^-5= 4^-2 (add the exponents since the base is the same)
5^-4*5^1= 5^-3 (add the exponents since the base is the same)
Square both terms (double the exponents)
(4^-2)^2= 4^-4
(5^-3)2= 5^-6
Then take out negative exponents (x^-a= 1/x^a)
4^-4 /5^-6 = 5^6/4^4
Final answer: 5^6/4^4
If you want it in number form
5^6= 15625
4^4=256
15625/256= 61.035...
Answer,a and b, sorry if they are wrong
