Answer:
y = x² - 3x - 28
Step-by-step explanation:
given a parabola with x- intercepts x = a and x = b , then
(x - a) and (x - b) are the corresponding factors and the equation is the product of its factors
y = (x - a)(x - b)
here the x- intercepts are x = - 4 and x = 7 , then the factors are
(x - (- 4)) and (x - 7) , that is (x + 4) and (x - 7) , then
y = (x + 4)(x - 7) ← expand using FOIL , then
y = x² - 3x - 28 ← in standard form
Overall the cost will be 152.93 but plus the 7% sales tax the final price will be 163.64 (sale tax 10.71)
3 over 8 plus 2 over 3 plus 1 over 3 = 11 over 8 or 1.375
Answer:
Step-by-step explanation:
So it’s 10