Answer:
Move everything so all terms are on one side of the = sign, and solve for zero using the Quadratic Formula. There are two answers: v=7±√69
10
Step-by-step explanation:
Subtract 1 from both sides so you have
e "standard form" of a quadratic is
, so first we have to identify a, b, and c in your equation: a=5, b= -7, and c= -1.
The quadratic formula is
. Plugging in your values, we get
−
. It looks a little funny, but you can't simplify it any more. You can check the answer by graphing the function on your calculator and asking for the function value at these points.
After graphing, hit 2nd, "Calc", "Value" on your TI, and type in either
, and you'll get that
F(g(3))
f(4 * 3^2 + 9)
f(45)
3 * 45 - 1
134
For this case, the first thing we must do is define variables.
m: number of times you cut the grass
d: amount of dollars you earn.
We now write the linear equation that models the problem:
d = 12m
The slope of the line is 12, which means that each time you cut the grass, you earn 12 dollars.
Answer:
an equation for the number of dollars, d, you earn when you mow the lawn m times is:
d = 12m
