Answer:
7
Step-by-step explanation:
Answer:
Step-by-step explanation:
49/30 or 1 19/30
The slope intercept form is:
y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0)
Since you know the slope is -2, you can plug it into "m"
y = mx + b
y = -2x + b
To find "b", you can plug in the point (-3, 10) into the equation
y = -2x + b
10 = -2(-3) + b
10 = 6 + b Subtract 6 on both sides
4 = b
y = -2x + 4
we can use formula
![a^3-b^3=(a-b)(a^2+ab+b^2)](https://tex.z-dn.net/?f=%20a%5E3-b%5E3%3D%28a-b%29%28a%5E2%2Bab%2Bb%5E2%29%20)
we can compare
we get
a=x
b=2
now, we can plug that in formula
and we get
![x^3-2^3=(x-2)(x^2+2x+2^2)](https://tex.z-dn.net/?f=%20x%5E3-2%5E3%3D%28x-2%29%28x%5E2%2B2x%2B2%5E2%29%20)
now, we can simplify it
...........Answer
Answer: 3 hours
Step-by-step explanation: Subtract the flat fee first. 15-3=12. She earned $12 without the flat fee, so divide that by 4. $12/$4 per hour = 3 hours.