He earned 505.80 a week without the increase. With the increase in wages he earns 604.8 with the increase
// Plug x into the equation
5(0.3)+2y=20
1.5+2y=20
// Subtract 1.5 from each side
2y=18.5
//Divide each side by 2
y=9.25 (C)
The absolute value of x is 4
Answer:
268
Step-by-step explanation:
Answer and Step-by-step explanation: <u>Standard</u> <u>form</u> of a quadratic equation is expressed as: y=ax²+bx+c, while <u>vertex</u> <u>form</u> is written as:
y=a(x-h)²+k.
The similarities between standard and vertex forms is that they show if the graph of the equation has a <u>minimum</u> (when a>0) or <u>maximum</u> (a<0) and it's easier to determine the y-intercept: for standard, the value of c is the intercept; for vertex, the value k is the intercept.
The advantage of standard form is that you can determine the product and sum of the equation's roots, which is a method to determine them.
The advantages of vertex form are: easier to find the vertex of the graph, which is the pair (h,k) and the axis of symmetry, which is the value of h.